When we experience something, there’s a variety of different factors which determine how well we’ll remember it—and how we’ll feel about it later on. Science has tasked itself with exploring the things which make our memory tick. Here are ten ways you can manipulate this fundamental part of your mind, because 10 things can truly change the way you store and retrieve information.

10 Sounds During Sleep Reinforce Memories

Scientists have discovered that memories linked to sound can be strengthened by playing those sounds softly while we snooze. In one study, participants tackled a Guitar‑Hero‑style game, learning two tunes before taking a nap. While they were in deep sleep, one of the melodies was whispered into their ears. Upon waking, the tune they heard during slumber was the one they could reproduce best from memory.

A follow‑up experiment by the same team asked volunteers to remember the locations of images on a screen, each paired with a distinct sound. When a particular sound was replayed during the subjects’ sleep, they were more likely to recall the original spot of the matching picture. The researchers argue that sleep is a prime time for the brain to consolidate memories, and attaching a sound cue nudges the brain to preserve that specific memory rather than letting it fade among the day’s countless events.

Practical applications are still speculative, but the findings hint that a carefully chosen soundtrack could help us steer which memories stick.

9 Distractions (When You’re Old)

Age‑related forgetfulness can sometimes be mitigated by subtle distractions that reinforce what we want to remember. In a study, two groups—young adults (17‑27) and older adults (60‑78)—studied a list of words, then faced an unexpected second test after a neutral picture‑sorting task. During that interim task, some participants were exposed to background reminders of a subset of the original words.

The older participants who received those background cues showed a striking 30 % boost in recall, while the younger cohort showed no measurable difference. This suggests that surrounding ourselves with passive reminders— even without conscious attention—can bolster memory performance in later life.

8 We Can Practice Forgetting

Psychologist Gerd Thomas Waldhauser has shown that humans can train themselves to deliberately suppress memories. Using EEG scans, he demonstrated that the same brain region responsible for stopping a motor impulse (like catching a ball) lights up when people try to push a memory out of mind. His work indicates that, with practice, we can gain control over this natural suppression mechanism, theoretically allowing us to forget at will.

So far, the technique works only with neutral memories, but Waldhauser speculates that future refinements could help trauma victims and those battling chronic depression by erasing painful recollections.

7 Diet Impacts Your Memory

Nutrition isn’t just about physical health; it also reaches deep into the brain. Diets high in fructose or saturated fat can impair learning and retention. Excessive sugar and bad fats lower levels of DHA, a fatty acid crucial for forming memories. Meanwhile, saturated fat can trigger brain inflammation, further eroding recall abilities.

Boosting omega‑3 intake helps replenish DHA and combat inflammation. While cutting all sweets isn’t mandatory, some studies hint that chocolate may actually support brain function and memory performance.

6 Learning a Second Language

Becoming bilingual, especially from a young age, offers lasting cognitive benefits. Research shows that speaking two or more languages can postpone dementia onset by roughly four years. Bilingual children also outperform monolingual peers on working‑memory tasks— the mental “RAM” that temporarily holds information— and the advantage widens as tasks become more complex.

Beyond memory, bilingualism sharpens focus and improves our ability to filter out distractions.

5 Washing Influences How We Feel About Our Memories

The old saying “wash your hands of guilt” has a scientific basis. Cleanliness can sway how we judge others and ourselves. For instance, being in a foul‑smelling room makes us harsher toward others’ moral lapses. Regarding personal memories, a simple hand‑wash can lessen guilt after a poor decision, as seen in gamblers who, after washing, placed larger bets as if bad luck had been rinsed away.

Conversely, washing after recalling a happy event can dull its emotional impact, showing that physical cleansing can modulate both negative and positive memories.

4 How You Treat A Written‑Down Thought Is Important

Writing notes is a classic memory aid, but the way we handle that paper matters. Ohio State researchers found that crumpling and discarding a note reduces the likelihood that its content will influence later decisions. In contrast, neatly folding and pocketing the paper keeps the thought alive and impactful. Simply leaving the paper on a desk yields a similar benefit.

This suggests our brains respond to physical metaphors—treating a thought gently preserves its influence.

3 Putting Yourself Through Pain Reduces Guilt

Self‑inflicted discomfort can alleviate guilt about past misdeeds. In one experiment, participants wrote about a time they excluded someone, then immersed one arm in icy water while another group used lukewarm water. Those who endured the cold rated their past actions more forgivingly than the warm‑water group.

Interestingly, when participants wrote about neutral daily events and then placed a hand in cold water, they kept their hand in longer and reported more pain than the control group, hinting that the desire for penance drives them to endure extra discomfort.

2 Difficult Fonts Help You Retain Information

Learning material presented in an unusual or hard‑to‑read font can boost recall. Princeton and Indiana researchers gave participants text in either Arial or Comic Sans for 90 seconds. Those who read the Comic Sans version remembered the material better after fifteen minutes.

Extending the study to high‑school classrooms, students who received lessons in a challenging font outperformed peers who studied in a simple font. So, while Comic Sans may be a design faux pas, it might just make your brain work harder and remember more.

1 Drugs Can “Delete” Memories

For individuals battling post‑traumatic stress disorder, intrusive memories can be debilitating. Scientists are developing drugs that interfere with the biochemical process of memory reconsolidation—the phase when recalling a memory essentially rebuilds it. By blocking this process, certain medications can cause distressing memories to fade or even disappear.

Critics argue that erasing memories could alter personal identity, while proponents contend that millions could regain normal lives if harmful recollections are safely removed.

Ready to experiment with your own memory‑hacking toolbox? Dive into these ten strategies and see which ones stick!

For centuries, scientists have wrestled with the brain’s massive filing cabinet, and today we’re unveiling 10 weird things about memory that will truly blow your mind. As technology sharpens our view, the oddball quirks of how we store, lose, and even share recollections become ever more astonishing.

10 Weird Things About Memory

10 False First Memory

A person’s earliest remembered moment is often touted as the first flicker of consciousness, yet the unsettling truth is that most of these so‑called “first memories” are fabricated. When researchers gathered a cohort of volunteers willing to recount the instant they first became aware, the majority flatly refused to accept that their recollections might be imaginary.

Nevertheless, a 2018 study provides solid scientific backing for this skepticism. Out of roughly 6,600 participants, about 40 % claimed to recall events as far back as nine to twelve months of age—well within the preverbal window when infants lack the capacity to form lasting memories. The consensus in developmental psychology holds that memories typically solidify only after the age of two.

Why, then, do people cling so tightly to the belief that their first memory is genuine? The answer weaves together nostalgia, identity reinforcement, and the human tendency to construct coherent life narratives. Researchers suggest that what we label as a “first memory” may actually be a blend of imagined scenes, fragmented early experiences, or details gleaned from family photographs and stories.

In short, the phenomenon reflects a complex mix of psychological needs and cognitive reconstruction, turning a potentially nonexistent early snapshot into a cherished personal legend.

9 Internet‑Sized Memory Bank

In 2016, a team of neuroscientists turned to the brain of a rat to estimate the storage capacity of the human mind. Despite the species gap, rats share a comparable hippocampal architecture and synaptic machinery, making them a useful proxy.

Researchers painstakingly traced every cell within a thin slice of the rodent hippocampus—a task that took an entire year. The resulting tissue sample, though minuscule enough to fit twenty times across the width of a single human hair, yielded 287 fully reconstructed neurons. Detailed analysis revealed that each neuron could employ up to 26 distinct signaling pathways to encode information.

By translating these findings into computational terms, the scientists concluded that the human brain is capable of storing roughly one petabyte of data—about the same magnitude as the entire public Internet. Remarkably, this massive memory bank operates on the power equivalent of a modest 20‑watt light bulb, whereas a computer attempting to match this capacity would require energy on the scale of a small nuclear plant.

8 Hypnopedia Is Real

The concept of hypnopedia—learning while you snooze—has long been a sci‑fi fantasy, yet modern research proves that the sleeping brain can indeed form certain types of memories. While the classic notion of absorbing whole textbooks during sleep remains a myth, recent experiments have uncovered intriguing capabilities.

In 2014, Israeli scientists conducted a daring study on nicotine addiction. Sleeping participants were exposed to cigarette smoke paired with unpleasant odors, and astonishingly, none of them smoked for the following two weeks, suggesting a powerful subconscious re‑conditioning effect.

Building on that, a 2017 investigation revealed that the brain can forge new memories of complex auditory patterns during sleep. Participants were unable to learn a new language while dozing, but they could reliably recognize intricate white‑noise patterns after hearing them during REM sleep.

Crucially, the learning only occurred when the stimuli coincided with REM cycles; exposure during deep non‑REM sleep yielded no retention. This discovery underscores the pivotal role of sleep stages in shaping what the brain can encode while unconscious.

7 The Epigenetic Mystery

Epigenetics—a field exploring how life experiences can be written onto our DNA without changing the genetic code—suggests that fathers may pass on memories of their own environments to their offspring. The idea that paternal life events could shape the biology of subsequent generations has gained traction through both animal and human studies.

In 2018, researchers at the University of California, Santa Cruz, narrowed in on a tiny roundworm, Caenorhabditis elegans, focusing specifically on its sperm. They discovered that sperm cells carried histone proteins—structures that package DNA—and within these histones lay epigenetic markers capable of conveying information about the father’s experiences.

This breakthrough confirmed that epigenetic information can reside in the sperm’s histone packaging, influencing crucial developmental chromosomes. When these markers were absent, the resulting offspring were sterile, highlighting the functional importance of this inherited molecular memory.

6 Master Memory Trick

Need a quick way to lock information into your brain? Grab a pen and start doodling.

A recent Canadian study set out to test whether sketching could outshine traditional memorization techniques. Researchers recruited 48 volunteers, splitting them into two age groups: early‑twenties and seniors around 80 years old, aiming to see if the effect persisted across the lifespan.

Participants were presented with a list of words and given a choice: write the words verbatim, jot down associated attributes, or draw a related picture. After a brief distraction, they were asked to recall as many words as possible.

The results were striking—those who doodled remembered the most items, surpassing both the rewrite and attribute‑listing strategies. The advantage held for both young and older adults, suggesting that the act of drawing engages multiple cognitive pathways—visual, verbal, spatial, and motor—thereby reinforcing memory consolidation.

5 Math Traumatizes The Mind

Math trauma is a thing. Most people know the feeling. You stare at an equation only to be rewarded with a debilitating mental shutdown. People who struggle with numbers are often branded as incapable. Unless you perform calculations with speed and accuracy, you risk being outed as a math idiot.

The truth is more heartening—most people are actually good at mathematics. Even those who sweat a small swimming pool during exams (and fail).

The problem? Fear.

Timed tests, pushy teachers, and classmates who zip through fractions do not help those who dread falling behind or making a mistake. Fear is a primitive thing. It shuts down memory because pausing to think about that approaching cave lion is life‑threatening. It just wants you to scramble up the nearest tree.

Fear does not know the difference between long‑gone predators and math problems. When a person panics over algebra, the fear dials down memory, which makes calculations nearly impossible.

4 Anti‑Memories

An enduring mystery surrounds how the brain balances the flood of stored experiences. If every memory remained crystal clear, we’d be overwhelmed and unable to learn new information, like forgetting where we parked the car.

In 2016, a pioneering study uncovered evidence for “anti‑memories,” a mechanism that helps the brain silence old traces to make room for fresh ones. This process hinges on a delicate dance between excitatory neurons, which fire up during memory formation, and inhibitory neurons that act as a calming counterbalance.

When a new memory is forged, excitatory cells create a burst of electrical connections, but they cannot stay hyperactive for long. Over‑excitation is linked to disorders such as epilepsy, schizophrenia, and autism.

To restore equilibrium, the inhibitory neurons generate anti‑memories—signals that mirror the original pattern but in the opposite direction. This opposing activity effectively places the original memory into a dormant state, preventing it from interfering with new learning.

Experimental suppression of these calming neurons re‑awakened previously “forgotten” memories, confirming that the memories were never erased, merely silenced. The discovery reshapes our understanding of how the brain manages the constant influx of information.

3 Prosthetic Memory

Implanting electrodes into a healthy human brain is fraught with regulatory hurdles, but a clever workaround emerged in 2018 when scientists partnered with epilepsy patients who already had implanted devices for therapeutic purposes.

The researchers aimed to test a future neural implant designed to learn an individual’s brain activity patterns and boost short‑term memory. Participants played a computer game that required rapid recall while their implanted electrodes recorded neural responses, especially during correct answers.

From these recordings, personalized neural activity maps were constructed for each volunteer. When the same participants later received targeted stimulation based on their own maps, short‑term recall improved by roughly 35 %, marking a major step toward a customized “prosthetic memory” system that could augment human cognition.

2 Memory‑Swapping Snails

In 2018, a team of California researchers achieved a bewildering feat: they transferred memories between sea snails (Aplysia californica). The experiment was designed to probe the existence of genetic memory.

The scientists first conditioned a donor snail by delivering a mild electric shock, prompting the animal to retract its fleshy wing‑like flaps. Repeated shocks taught the snail to keep its flaps withdrawn for longer periods, establishing a learned defensive response.

RNA—molecular messengers that convey genetic information—was then extracted from the trained snail and injected into a naïve recipient. When the second snail experienced its first shock, it displayed a prolonged retraction, as if it anticipated the stimulus, mirroring the donor’s learned behavior.

Conversely, snails that received RNA from untrained donors showed only brief retractions, indicating they had not inherited the memory. This groundbreaking result suggests that memory traces can be encoded within RNA and transmitted across individuals, though the precise molecular choreography remains a mystery.

1 Alzheimer’s Breakthrough

No cure exists for Alzheimer’s disease, which currently devastates the lives of roughly 50 million people worldwide. In 2015, Australian scientists unveiled a novel, non‑invasive approach that directly tackles the disease’s root cause.

Alzheimer’s is characterized by the buildup of amyloid plaques that obstruct neural communication, leading to relentless cognitive decline. To test a new therapy, researchers used a mouse model engineered to develop the same plaques seen in human patients.

Applying focused therapeutic ultrasound—a technique that delivers ultra‑fast sound waves—researchers gently opened the blood‑brain barrier, allowing the brain’s own waste‑removal cells to infiltrate and clear the plaques. Remarkably, about 75 % of the treated mice regained full memory function, performing on par with healthy controls.

This ultrasound‑driven method operates without damaging tissue and sidesteps the need for drugs, offering a promising, drug‑free avenue for future Alzheimer’s treatment.

As researcher Donna Bridge once quipped, “When someone tells me they are sure they remember exactly the way something happened, I just laugh.” Our memories are perpetually in motion, reshaped by accidents or deliberate tweaks. By the time you finish this 10 mind altering list, your own recollection will have taken on a new hue.

10 Mind Altering Insights

10 The Way You Lie Impacts Your Memory

Researchers at Louisiana State University examined whether the style of a lie influences how well we retain it. They contrasted two lie categories: elaborate false descriptions, where participants concoct detailed narratives about events that never occurred, and simple false denials, brief statements asserting something didn’t happen.

Findings revealed that false descriptions are far more memorable. Because constructing a vivid, detailed fabrication demands mental effort, those lies become highly accessible and persist longer. Participants who crafted such elaborate falsehoods could still recall them after a 48‑hour interval.

Conversely, false denials require minimal cognitive load—no new details need to be invented—so the brain stores them more weakly. Most participants failed to remember their denials after the same two‑day period.

The authors suggest these insights matter for criminal interrogations, noting that even innocent suspects may struggle to recall truthful denials, just as they struggle to retain fabricated ones.

9 Cleaning Your Memory May Help You Win Sports Bets

University College London and the University of Montreal teamed up to test whether “cleaning” one’s memory can boost sports‑prediction accuracy, edging participants closer to the performance of sophisticated computer models.

Human decision‑making typically draws on a limited pool of past outcomes. When those memories are skewed—perhaps because the retrieved events didn’t reflect the most probable results—our forecasts become unreliable. In short, bad data leads to bad predictions.

The experiment split participants into two cohorts. The “actual” group received true game outcomes, while the “ideal” group was fed a fabricated record where the top‑ranked team always won, regardless of reality. This systematic distortion served to “clean” their memory bank with statistically optimal information.

When later asked to forecast upcoming matches, the “ideal” cohort outperformed the “actual” group, demonstrating that exposure to idealized outcomes sharpened their predictive skill.

In real life, the researchers advise fans to study the most probable outcomes—ranking teams by win totals—and use those benchmarks as a mental template before placing bets.

With practice, this approach can train the brain to rely on higher‑quality memories, though it offers no guarantee of victory.

8 Justifying Atrocities Changes Memories Of War

A Princeton University study explored how narratives that rationalize wartime cruelty can reshape collective memory. Participants read four stories describing soldiers committing atrocities in Iraq and Afghanistan, each accompanied by justifications meant to excuse the behavior.

Seventy‑two European‑American volunteers then watched video retellings of two of those stories, this time stripped of any justifications. The researchers later probed what participants remembered.

Results showed that while participants recalled the violent acts from both the American and Afghan accounts, they were significantly more likely to remember the rationalizations for the American soldiers. The omission of justifications in the videos did not erase the memory of those explanations for the in‑group narratives.

The authors argue that such selective memory distortion reveals how politicians and journalists can subtly influence public opinion, potentially swaying votes by framing atrocities in a way that mitigates moral blame.

7 Educated Black Men May Be Remembered As Whiter

An experiment published in SAGE Open examined how subtle priming can warp racial perception. College students were briefly exposed to the word “educated” or “ignorant” before viewing a photograph of a Black man.

Later, participants were presented with seven versions of the same face: the original, three lighter‑toned images, and three darker‑toned ones. They were asked to select the picture that matched the original.

Those primed with “educated” were markedly more prone to choose a lighter‑skinned version, a phenomenon dubbed “skin‑tone memory bias.” The findings suggest that when a stereotype—such as “educated Black men are an exception”—conflicts with reality, memory adjusts to protect pre‑existing prejudices, effectively recalling the individual as whiter than he truly is.

6 Painkillers May Prevent Marijuana‑Related Memory Problems

Marijuana offers therapeutic benefits for conditions ranging from cancer pain to epilepsy, yet its primary psychoactive component, Delta‑9‑THC, has been linked to learning and memory deficits.

Researchers at Louisiana State University discovered that THC spikes levels of the enzyme COX‑2 in the hippocampus—the brain region crucial for memory formation. By genetically or pharmacologically lowering COX‑2 in mice, they prevented the THC‑induced memory impairments.

These results hint that over‑the‑counter COX‑2 inhibitors, such as ibuprofen, might counteract the cognitive side effects of cannabis use.

Beyond mitigating short‑term memory issues, the team speculates that a THC‑COX‑2 combo could hold promise for Alzheimer’s treatment, although Stanford researchers caution that smoking marijuana itself won’t stave off the disease.

5 Walking Through Doorways Causes Memory Lapses

A University of Notre Dame investigation revealed that simply passing through a doorway can trigger forgetting, a phenomenon dubbed an “event boundary.” This mental partition separates experiences occurring in different rooms, making it harder to retrieve information from the previous space.

In both virtual simulations and real‑world tasks, college participants performed a series of item‑exchange actions either entirely within one room, after crossing a single doorway, or after navigating multiple doorways that eventually led them back to the original location.

Across all conditions, participants exhibited greater forgetfulness after traversing a doorway, even when they returned to the starting room. The act of moving between spaces, rather than the environments themselves, appeared to fragment memory storage.

These findings underscore how everyday architectural features can subtly influence our ability to recall recent decisions.

4 Women Remember Men With Low‑Pitched Voices

Research from the University of Aberdeen indicates that men who speak with deeper tones are more likely to be remembered by women, and their statements are retained more robustly. Women show a clear preference for low‑pitched voices, which also boosts the perceived suitability of the speaker as a mate.

However, facial memorability hinges on distinctiveness. A study from the University of Jena found that unattractive faces are often remembered better than attractive ones when the latter lack striking features such as large eyes.

These outcomes are surprising because auditory information is generally harder to retain than visual cues. Yet, studies from the University of Iowa suggest that mental rehearsal of sounds can enhance recall, and men seeking to be memorable might simply lower their vocal pitch.

3 Love At First Sight May Be A Memory Trick

Northwestern University scholars propose that the romantic notion of “love at first sight” may be nothing more than a cognitive illusion. Each time a memory is retrieved, it is rewritten, incorporating present‑day emotions and information.

In their experiment, participants were asked to locate objects on a screen. When the background changed, they consistently chose the incorrect location. On a subsequent trial, they repeated the same mistake, indicating that their memory had been reshaped by the altered context, even though the original information was wrong.

Further research shows that repeated retrieval degrades accuracy, eventually producing wholly false recollections—explaining why eyewitness testimony can be unreliable. Moreover, studies at Iowa State University demonstrate that introducing new details within a six‑hour window after recall can deliberately manipulate memories.

2 Even People With Exceptional Recall May Form False Memories

Highly Superior Autobiographic Memory (HSAM) endows individuals with near‑perfect recall of personal events, often extending back to early childhood. Yet, even these memory champions are vulnerable to distortion when misinformation infiltrates their recollections.

Actress Marilu Henner, a celebrated HSAM case, can pinpoint the exact day she landed her role on Taxi and recall attending a Grease premiere on Sunday, June 4, 1978. She even cites her baptism as her earliest memory, a detail reinforced by her godmother’s frequent stories about the event.

Such repeated exposure can unintentionally seed false details, reshaping Henner’s memory of the baptism over time. This illustrates how even flawless autobiographical recall can be altered by external narratives.

University of California researchers conclude that HSAM individuals retain near‑perfect accuracy only when shielded from misleading information; otherwise, they are as prone to false memories as anyone else.

1 Memories May Be Manipulated To Erase Fear

Long‑term memories undergo a consolidation process, becoming unstable each time they are retrieved. During this reconsolidation window, external cues can modify the memory before it is stored again.

At Uppsala University, participants formed fear memories by receiving an electric shock while viewing a neutral image. One group was allowed to reconsolidate the memory; another group’s reconsolidation was disrupted through repeated exposure to the image without the shock. The disrupted group subsequently lost their fear response.

Northwestern University researchers extended this work by pairing mild shocks with distinct odors during sleep. When participants later smelled the same odor without the shock, their fear response to the associated face was markedly reduced. This suggests that targeted interventions during reconsolidation or sleep can dampen, or possibly erase, traumatic memories—offering hope for treating phobias, panic attacks, and PTSD.

When you glance at your smartphone, you might wonder just how much memory it hides. From a modest 64 GB iPhone to a massive 1‑TB model, storage has exploded, and the story gets wilder the farther back you look. In 1995 the average PC sported a paltry 12 MB of RAM and a half‑gigabyte hard drive. The ten mind‑blowing numbers below illustrate just how far computer memory and storage have vaulted, and they’ll make you see data in a whole new light.

10 The Human Mind May Be Able to Store Petabytes of Data

We often liken a computer’s RAM to the way our own brains retain information – that’s why the word “memory” works for both. While a hard drive is a compact slab of silicon, the brain is a convoluted organ packed with billions of neurons, each storing bits of experience, facts, melodies, and that one line from a movie you can’t stop quoting.

Scientists haven’t nailed down an exact figure for the brain’s storage capacity, because the organ doesn’t function like a binary drive. Still, the exercise of estimating it is entertaining, especially for computational neuroscientists who love to treat the mind as a giant data bank.

Early conjectures ranged wildly: some suggested a meager one terabyte, while others imagined a staggering 2.5 petabytes. To picture that, remember that one terabyte can hold roughly 250 full‑length movies; a petabyte is a thousand of those, and 2.5 petabytes would be enough for about 625 000 movies or 16.25 billion pages of text.

More recent work nudged the estimate toward roughly one petabyte – a figure that, at the time of the study, matched the total publicly available information on the internet in 2016. Whether you believe the brain can truly hold that much, the comparison certainly puts our personal data stores into perspective.

9 You’d Need Unbelievable Space to Store a Yottabyte

A petabyte already sounds colossal – imagine the entire internet compressed into a single storage unit. Yet the metric system marches on, and the next giant after petabytes is the yottabyte. After petabytes come exabytes, then zettabytes, and finally yottabytes, the largest officially recognized unit, equal to one quadrillion gigabytes.

If a yottabyte of data existed today, it would need a massive physical footprint. Rough calculations suggest that the collection of hard drives required to house a yottabyte would stretch across the combined area of Delaware and Rhode Island, demanding roughly a million data centers to accommodate the sheer volume.

While we’re nowhere near that scale yet, the concept underscores just how quickly our storage needs are outpacing the units we once thought were “big enough.”

8 278,000 Petabytes of Traffic Flowed Through the Internet Per Month in 2021

Every time you stream a video, scroll a feed, or send an email, you’re contributing to a massive data river. In 2021, the worldwide internet moved an eye‑watering 278,108 petabytes of information each month – a leap from the 96,054 petabytes recorded in 2016.

Projections for 2023 suggested the flow would surpass 150.7 exabytes per month (about 150,700 petabytes), highlighting the relentless growth of digital communication and the ever‑increasing demand for bandwidth.

7 It Would Take 500,000 Terabytes of Data to Map a Mouse’s Brain

Mapping a brain isn’t just about counting neurons; it’s about capturing every synapse and connection. While a full human brain map is still beyond our reach, researchers have turned to mice as a more manageable model.

Scientists estimate that a complete mouse brain would generate about 500,000 terabytes of raw data. They’ve already begun with a tiny 10‑square‑millimeter slice, which alone is expected to require roughly 10,000 terabytes. Scaling up to the whole organ balloons the demand dramatically.

For context, mapping a human brain is projected to need an astronomical 1.3 billion terabytes, underscoring the massive computational challenges that lie ahead for neuroscience.

6 In 1980, a 1 GB Hard Drive Weighed Over 500 Pounds

Technology’s miniaturization journey is nothing short of astonishing. In the early 1980s, IBM introduced a hard drive that could store a single gigabyte of data – a capacity that today fits comfortably on a key‑chain flash drive.

That pioneering drive cost a staggering $40,000, weighed about 550 pounds, and occupied the space of a typical refrigerator. By contrast, you can now buy fifty 1 GB flash drives for just over $75, delivering the same storage in a pocket‑sized form factor.

The price‑to‑weight ratio alone is mind‑blowing: for the cost of that 1980 behemoth, you could purchase over 26,600 of today’s tiny drives, illustrating how far we’ve come in squeezing storage into ever‑smaller packages.

5 Data on Star Trek Has Less Storage Capacity Than Modern Supercomputers

Fiction often predicts the future, and “Star Trek” gave us Commander Data – a sentient android with a massive memory bank. The series disclosed that Data possessed roughly 800 quadrillion bits of storage, which translates to about 100 petabytes (or 100,000 terabytes).

Back when the episode aired in 1989, that figure seemed otherworldly. Fast forward to today, and the Aurora supercomputer already boasts around 220 petabytes of capacity, comfortably eclipsing Data’s fictional hardware – albeit without true consciousness.

The comparison highlights how quickly what was once sci‑fi fantasy becomes mundane reality in the high‑performance computing world.

4 The Fastest Internet Ever Recorded Was More Than 7 Million Times Faster Than Average

Speed matters as much as capacity. In the United States, the average broadband download hovers around 219 Mbps with an upload of 24 Mbps – respectable, but far from blistering.

In 2021, Japanese researchers shattered expectations by achieving a jaw‑dropping 319 terabits per second using a four‑core optical cable. That speed is over seven million times faster than the typical U.S. household connection.

At that rate, you could theoretically download about 80,000 full‑length movies in a single second, turning the concept of “buffering” into a nostalgic relic.

3 Frontier Is the Most Powerful Computer Ever Built

Frontier, currently perched at Oak Ridge National Laboratory, earned the title of the world’s first exascale supercomputer, capable of performing more than one quintillion (10^18) calculations each second. Weighing nearly 270 tons, housing over 40,000 processors, and gulping power equivalent to 15,000 average homes, Frontier represents the pinnacle of raw computational might.

2 Synthetic DNA Could Have 215 Petabytes of Storage Per Gram

When it comes to packing data into minuscule volumes, nature offers a dazzling blueprint: DNA. Researchers have theorized that synthetic DNA could store up to 215 petabytes of information in just a single gram of material – a density far beyond any silicon‑based medium.

The catch? Writing and reading data from DNA is painstakingly slow, often taking hours, and the cost remains astronomical. MIT estimates that storing a single petabyte in DNA could set you back roughly $1 trillion, making the technology more of a futuristic curiosity than a practical solution for now.

1 Everything Ever Spoken Would Fill 5 Exabytes

Trying to quantify humanity’s collective speech is a wild thought experiment. If we recorded every utterance from every person who ever lived – roughly 117 billion individuals – the total would amount to about 5 exabytes of data.

Researchers estimate that the average person speaks around 860.3 million words over a lifetime. Multiplying that by the total number of humans gives a staggering figure that dwarfs even the most massive data centers we have today.

When it comes to the brain, the phrase “10 unbelievable things” isn’t just a catchy tagline—it’s a reality that many of us live with without even realizing it. Forty percent of the population will confront some form of memory loss by the time they hit the age of 65. While a few attribute this to the natural aging process, a surprising array of everyday choices, chemicals, and habits can sneakily erode our ability to recall or create memories. Below, we explore ten astonishing culprits that could be quietly sabotaging your mind.

10 Unbelievable Things That Affect Your Brain Every Day

10 Mountain Dew Has Been Linked to Memory Loss

Food additives stir up heated debates worldwide, and misinformation often clouds the truth about what’s truly hazardous. Take the case of Mountain Dew, a soda that has faced bans in Europe and Japan because it contains brominated vegetable oil (BVO). Some reports paint BVO as a flame retardant, a carcinogen, and a host of other terrifying chemicals.

In the beverage world, BVO functions as an emulsifier, a substance that keeps the citrus flavor from separating. It’s been used since the 1930s, but large‑scale consumption has raised red flags. Both PepsiCo and Coca‑Cola pledged to remove BVO in 2014, a promise they later fulfilled after initial delays.

Although BVO isn’t a flame retardant in the same way table salt isn’t bleach, researchers have linked it to memory impairment among individuals who gulp down more than two liters of soda a day. The connection isn’t definitive, but the correlation suggests that excessive consumption of this fizzy drink could be a hidden threat to cognitive health.

So, the next time you reach for that neon‑green can, consider the long‑term impact on your brain’s memory‑keeping machinery.

9 Extensive Use of Benadryl Is Linked to Dementia

If you rely on Benadryl to tame chronic allergies, you might want to rethink that habit. Prolonged use of this antihistamine has been associated with an increased risk of early‑onset dementia and other memory‑related issues. Benadryl blocks acetylcholine, a neurotransmitter essential for learning and memory, which can lead to confusion and a higher likelihood of falls among older adults.

While the link is observational rather than causative, studies indicate that diphenhydramine—the active ingredient in Benadryl—can raise the odds of dementia by roughly 54% when taken for three years or more. This statistic underscores the importance of evaluating long‑term medication use and seeking alternatives when possible.

8 Taking Photos Impairs Your Ability To Remember What You Photographed

Every year, an astounding 1.81 trillion photos are snapped worldwide. With 15 billion smartphones in circulation—almost two for every person on the planet—capturing moments has become second nature. Yet, this habit may be doing more harm than good to our memory.

Research shows that the act of photographing actually impairs our recall of the very scene we just captured. Whether you take one shot or a dozen, the moment the shutter clicks, your brain hands off the job of remembering to the image itself. In other words, your mind assumes the photo will preserve the memory, so it doesn’t bother to store the details.

This “hand‑off” theory explains why people often forget specifics of events they think they’ve documented. The irony is palpable: we take pictures to remember, yet the very act of doing so may erode the memory we hoped to safeguard.

7 Sometimes Sex Can Cause Short‑Term Amnesia

Brace yourself—this one gets personal. In rare cases, intense sexual activity has been linked to a phenomenon known as transient global amnesia (TGA). TGA typically strikes people in their 50s and 60s, temporarily wiping out up to 24 hours of memory.

While any strenuous physical exertion can potentially trigger TGA, studies suggest that particularly vigorous sexual encounters may be a common catalyst. The memory loss is short‑lived, lasting only a few hours, but some individuals have reported multiple episodes over the span of decades.

One documented case describes a man who experienced TGA five times across twenty years, each episode erasing an entire day from his recollection. Though rare, the link highlights how extreme physiological responses can briefly disrupt the brain’s memory‑storage systems.

6 Shift Work Leads to Major Health Issues Including Memory Loss

Work isn’t supposed to be fun, but when a job forces you into rotating or night shifts, the toll on your brain can be severe. A substantial body of research now indicates that shift work is linked to diminished cognitive performance and poorer working memory.

Across 18 studies involving more than 18,000 participants—including half from the healthcare sector—shift workers consistently scored lower on tests of focus, alertness, impulse control, and overall cognition. The irregular sleep patterns and circadian disruptions inherent to shift schedules appear to erode the brain’s ability to retain and retrieve information.

What’s especially concerning is that many of those affected are doctors, nurses, and other frontline professionals who must make quick, accurate decisions while battling the cognitive fallout of their work hours. The evidence suggests that maintaining a regular schedule may be crucial for preserving mental sharpness.

5 First‑Person Shooters Lead to Hippocampus Damage and Memory Loss

Video‑game research is a mixed bag, but a growing number of studies point to a darker side of first‑person shooters (FPS). Gamers who clock more than six hours per week of FPS play have shown measurable shrinkage in the hippocampus—the brain region responsible for short‑term memory formation.

Researchers categorize FPS players into two groups: spatial strategists, who rely on memory maps, and response learners, who depend on the caudate nucleus for rapid reaction. Chronic gamers tend to fall into the latter category. After roughly 90 hours of gameplay, brain scans reveal significant hippocampal atrophy.

While the study’s authors caution that more research is needed before drawing definitive conclusions, the findings raise questions about the long‑term cognitive impact of immersive, fast‑paced gaming experiences.

4 Some Algae Blooms Cause Brain Damage and Memory Loss

Algae blooms are more than an eyesore on a beach; they can also unleash potent neurotoxins that jeopardize brain health. One such toxin, domoic acid, accumulates in the marine food chain and has been linked to severe brain injury and memory deficits in sea lions and other marine mammals.

Another notorious culprit, Pfiesteria piscicida, sparked alarm in the 1980s when fishermen exposed to the organism began exhibiting cognitive dysfunction. Even scientists studying the microbe suffered similar symptoms, including loss of leg sensation and the need to crawl for assistance.

Although research on human effects remains limited, anecdotal reports describe confusion, nausea, and disorientation among those who encounter contaminated water. The potential for these microscopic threats to impair memory underscores the importance of monitoring and managing harmful algal events.

3 A Study Linked SpongeBob to Poor Brain Function in Children

From the 1970s onward, society has repeatedly blamed popular culture for corrupting youth. In 2011, researchers turned their attention to SpongeBob SquarePants, suggesting the fast‑paced cartoon could impair higher‑order cognition in preschoolers.

The study observed four‑year‑old children who watched nine minutes of SpongeBob and subsequently displayed reduced self‑control, diminished ability to delay gratification, and weaker working‑memory performance compared to peers who engaged in other activities.

While the findings were limited to a very young demographic and did not establish long‑term memory decline, they highlight how overstimulating media can temporarily overload a child’s developing brain, making it harder to retain new information.

2 A Bad Sex Life Can Lead to Memory Loss in Later Life

Sex isn’t just a source of pleasure; it also offers a suite of health benefits, from lower blood pressure to enhanced immune function. Recent research adds another perk to the list: a satisfying sex life may protect against age‑related memory decline.

Studies tracking sexually active adults aged 50 to 89 found that those who reported higher sexual satisfaction scored better on memory assessments than their less‑active counterparts. In a 12‑year longitudinal study of over 800 men, participants who experienced low sexual satisfaction or erectile dysfunction showed a higher incidence of memory deterioration.

The research emphasizes that it’s not the frequency of sexual activity that matters, but the overall sense of fulfillment. Maintaining a healthy, satisfying intimate life could therefore serve as a buffer against cognitive decline in later years.

1 Social Isolation Has Been Linked to Memory Decline

Being alone isn’t just a lonely feeling; it can actively erode your brain’s memory‑keeping capabilities. Research indicates that social isolation precedes memory loss, meaning the lack of interpersonal interaction can be a catalyst for cognitive decline.

During the COVID‑19 pandemic, clinicians observed a surge in memory‑related issues among individuals who were suddenly cut off from regular social contact. One study found that 60% of participants with pre‑existing Alzheimer’s or mild cognitive impairment experienced worsening symptoms when isolated.

Experts believe that reduced social stimulation deprives the brain of essential mental exercise, leading to diminished resilience and a faster rate of memory degradation. Cultivating friendships and staying engaged with community activities may therefore be a vital strategy for preserving cognitive health.

They say the human brain has a storage capacity that is in the range of 2.5 million gigabytes. That said, our memory can be rather selective. Fresh things are easily accessible. Over time, those memories, especially less significant ones, fade away. For instance, you can probably remember any of the conversations you had yesterday fairly well, even if not word for word. Now try to remember a conversation you had 10 years ago on this day. For most people, that’s an impossible task. If something was significant to you in an emotional way, it will probably be gone forever. But there are some things you can do if you want to improve your memory, and some of them are quite unexpected. Make sure to bookmark this one in case you forget about it.

10. Apple Juice Stimulates Neurotransmitters

They say an apple a day keeps the doctor away, but no one specified if you needed to eat the thing. Some research suggests you can juice it if you want and still get some remarkable benefits. In specific, apple juice has been shown in animal studies to help increase production of the neurotransmitter acetylcholine. This is a key component in brain function and, in particular, memory. Patients who suffer from Alzheimer’s have shown that, when acetylcholine levels are increased, it lowers the rate of mental decline. 

The working theory based on the observations is that, if a person regularly drinks apple juice, they’ll be able to maintain proper functioning of their brain and memory, as well as potentially delay Alzheimer’s. Apples also contain antioxidants which are believed to help memory and cognition as well. 

A 2006 study involving a small group of patients aged 72 to 93 who had Alzheimer’s showed that drinking 4 oz of apple juice three times a week could reduce the risk of Alzheimer’s by as much as 75%.

9. Doodling Can Boost Memory By as Much as 30%

Good news if you’re one of those people who can’t resist doodling on paper when you have a pen and an idle moment to spare. The simple act of doodling can apparently help focus your mind and improve memory and even understand new concepts and ideas better. 

To test the potential usefulness of a doodle, participants in one experiment were forced to sit and be bored. They were given a boring test then moved to another room with nothing in it to hold their attention. They had to listen to a pre-recorded, monotone phone message about people being invited to a party and write down the names of people who were coming while ignoring those who were not coming.

One group had to only focus on the long, boring message. The other was allowed to use a pencil to fill in little holes and boxes on the paper, a very basic kind of doodling. The doodlers were better able to remember the necessary names and, in a surprise memory test after the fact, their results were 30% better than the non-doodlers. 

8. Weight Loss, Including Surgical Weight Loss, Can Improve Memory

Weight issues are something of a modern plague among humans. In 2021, about 45% of people polled across 30 countries said they were actively trying to lose weight. There are a lot of reasons people may want to do so ranging from wanting to look better, to feel better, and to help deal with serious medical issues like heart disease or diabetes which can be exacerbated by weight problems. And if you’re in the same boat as so many others, here’s another reason to consider shedding a few pounds. Losing weight has been shown to help improve memory.

Kent State University conducted a study of 150 overweight people. It’s known that being overweight is a risk factor for Alzheimer’s so the study wanted to see if reversing the condition would have any effects on memory. Of the study participants, some underwent gastric bypass surgery while others did not. Within 12 weeks, those who had undergone the surgery actually showed significant improvement.

Researchers at Harvard have also researched into the links between the kinds of bad cholesterol from saturated fats and trans fats. They’ve concluded it’s not just your heart but your brain that suffers when bad cholesterol builds up. Diets high in fat and cholesterol seem to contribute to the creation of beta-amyloid plaques, which are found in the brains of Alzheimer’s patients. 

Women in the study who ate diets high in saturated fats and butter scored worse on memory tests than those who ate very little. Plaque from these diets seems to build up in brain tissue and deprive your brain of oxygen, thus causing poor performance on things like memory tests. 

7. Laughing Releases Hormones That Improve Short Term Memory

There’s an old saying that laughter is the best medicine which has probably been of little to no help to most people suffering from fatal illnesses. That said, there is evidence that laughter does have some benefits to your mental health, including improving your short-term memory.

Humor, and in particular laughter, has been shown to reduce levels of the stress hormone cortisol. In one small study, participants had to sit still and do nothing for 20 minutes, or watch a self-selected comedy video. After 20 minutes, a test was administered to both groups to assess short-term memory including delayed recall, learning ability and visual recognition. Cortisol levels in saliva were measured throughout.

Members in the human group showed improved results in all three areas. Salivary cortisol was considerably less, as well. The conclusion was that laughter, and humor, have a noticeable effect, at least in the short term, on memory and recall.

6. Taking Naps Can Boost Cognitive Function

If you ever find yourself feeling a little draggy in the afternoon and think maybe a quick nap will get you back on track, science has your back. There’s evidence that nap time isn’t just a nice way to get refreshed, it can also improve your memory and other cognitive functions. All it takes is 30 to 90 minutes per day, or even less in some cases.

A 2009 study showed that people who memorized a list of words and then took a nap, even just a six-minute nap, were better at recalling the words later than those who didn’t nap. Those who take longer 30 to 90 minute naps don’t just have better word recall, they’re also better at figure drawing. 

One thing worth remembering is that longer naps actually become detrimental to your cognitive function rather than beneficial. At some point you’ll start experiencing the opposite results if you nap for too long, so keep them brief and to the point. 

5. Riding a Motorcycle Improves Cognition

Many of the grandmothers of the world will assure you that there’s no good reason to ride a motorcycle, and it’s terribly dangerous and irresponsible. But if you are a fan of the open road and the wind in your hair (under your helmet), then good news. Riding a motorcycle actually seems to have a beneficial effect on various aspects of cognition. 

Research into men who had stopped riding motorcycles for over a decade. Half the group started riding again every day while the other half kept driving cars or bicycles. After two months, the motorcycle group showed higher marks in cognitive function and their results on simple memory tests increased by 50% over their pre-riding results. Those who weren’t riding were actually a little worse after the two months.

The speculation is that the heightened alertness required for riding a motorcycle engages more of your brain and thus has an improved effect overall. 

4. Chewing Gum

It used to be an insult back in the day to tell someone they’d have trouble walking and chewing gum at the same time. You don’t hear that so often anymore and maybe that’s a good thing because apparently chewing gum is actually doing you some good. Chewing gum has been linked with information retention and improved memory.

In one study, students cramming for a test were split into groups where one chewed gum during their study session and the other did not. Those who chewed gum performed better and also reported feeling more alert for the exam. This may be due in part to the act of chewing gum increasing overall blood flow as, mild though it may be, it’s still physical activity. It increases blood flow to the brain and can make you feel more alert. That alertness from gum chewing has been shown in more than one study. It’s also been shown to reduce stress which can help with focus. The exact reasons are still speculative.

Another test on adults split participants into three groups. One chewed gum, one mimicked chewing gum and one did nothing. They were given memory and attention tests and the gum chewers scored 24% higher on immediate word recall and 36% higher on delayed word recall. Whatever the scientific reason, the results seem to keep indicating that gum will help improve your memory.

3. Pink Noise During Sleep Helps Improve Waking Memory

Many people like to have some white noise playing in the background when they sleep. A machine that plays nature sounds, or just a fan running. But some research suggests you want to do away with the white noise and get yourself some pink noise.

Pink noise, like white noise, is still relatively random. However, it has equal energy at every octave which means it includes high frequency and low frequency sounds that makes it more natural and soothing than white noise. Listening to pink noise can help improve your sleep and your waking memory as well.

In a test to determine if participants would have better recall of a memory test they took before sleep. Pink noise, which essentially sounds like rushing water, was played at regular intervals during the night on one night and not on another. After a night of pink noise enhanced sleep, participants performed three times better on memory tests than on nights without it. 

2. Sex Can Improve Memory

It’s always good when something you like turns out to be good for you, so raise a glass to the research that suggests having sex can actually improve your memory, at least if you’re old enough. 

Research has shown that sexual activity in adults aged 50 to 89 has noticeable benefits for their memory and cognitive abilities. Interestingly enough, there was actually an observed difference between how this affects both men and women as well. Men and women of the right age who were sexually active were tested on both word recall and number sequencing. Men showed increases in both areas while women seemed to receive no benefit to number sequencing. 

In animal studies, rats that were allowed to have sex every day for two weeks showed more neuron growth than those that had only had sex once in that time. 

A later study of women aged 18-29 showed that those who had more regular sexual intercourse had improved their ability to recall abstract words. However, there was no improvement in other areas such as the ability to recall faces.

1. Controlling Fire May Have Improved Memory in Our Ancient Ancestors

Think of how cool it must have been when one of our ancient ancestors first realized they could make fire. Not just by accident but by performing the same task again and again to ensure they could always have fire when they wanted it. No doubt that guy was super popular until everyone else figured it out.

Fire was mastered even before homo sapiens were strutting around, and homo erectus was likely using it not just to cook but to scare away predators and make inhospitable locations more tolerable so they could expand their territory. 

Cooking food, both meat and vegetables, would allow for changes such as smaller jaw size, smaller gut, and other digestive differences between us and our distant ancestors. Also, the nutrition received altered us as well which improved social and intellectual abilities. 

Fire offered artificial light so that our day didn’t have to end with the sun. Instead of sleeping for 12 or more hours a day, our ancestors could stay awake in their caves and spend more time doing literally anything. Thus began a progression of cognitive growth including problem solving skills and long-term memory. It’s also believed fire would have allowed for more consistent REM sleep because these ancient ancestors wouldn’t have to fear predators nearly as much with fire as a protector. In REM sleep, the brain is able to process memories, develop, build, and retain skills and essentially learn from what we’ve done. All of that can potentially be linked to fire. Arguably, fire allowed us to have memory period.