Get ready for some freaky facts about the world’s tallest human—Robert Wadlow, the Alton Giant. From his ordinary birth to the giant‑sized challenges he faced, each fact reveals a new twist in his astonishing story.
10 Sized At Birth
Freaky Facts: Early Growth
Robert Pershing Wadlow entered the world on February 22, 1918, in Alton, Illinois, weighing a perfectly average 3.8 kilograms (8.4 lb). His parents, Harold and Addie Wadlow, were of ordinary stature, and his later siblings grew up to be normal‑sized as well.
But the little giant didn’t stay ordinary for long. By six months, he tipped the scales at 14 kg (30 lb)—twice the weight of a typical infant. At his first birthday he was already 20 kg (45 lb), and by 18 months he had reached 30 kg (67 lb). When he became a toddler, he measured a startling 91 cm (3 ft) tall.
9 A Very Big Kid
At five years old, Robert stood an impressive 163 cm (5 ft 4 in) and weighed 48 kg (105 lb). He was already outgrowing his kindergarten peers, slipping into clothes meant for a 17‑year‑old. Teachers described him as well‑behaved and bright, but the biggest hurdle was finding a desk he could actually sit at.
By eight, store shelves no longer stocked his size, and tailors became his regular go‑to. At nine, he could hoist his father up a flight of stairs. By ten, he measured 196 cm (6 ft 5 in) and tipped the scales at 95 kg (210 lb). His shoe size was a massive 17.5—hardly something you’d find in a 1928 shoe store.
At 13, he joined the Boy Scouts, becoming the tallest Boy Scout ever at 224 cm (7 ft 4 in). He needed a custom uniform, sleeping bag, and tent. His teenage metabolism was a beast, consuming five times the calories of an average boy his age. When he graduated high school, he towered at 254 cm (8 ft 4 in) and weighed 177 kg (391 lb).
8 The Cause
Just before his 12th birthday, a visit to Barnes Hospital in St. Louis finally revealed the source of his extraordinary growth: an overactive pituitary gland spewing excess growth hormone.
The most common trigger for such a gland is a benign tumor called an adenoma, which can force the gland to release too much hormone. While many adenomas also raise prolactin levels, some specifically boost growth hormone. Occasionally, a tumor exists without altering hormone output, known as a non‑secreting adenoma.
Today, doctors can shrink or remove these tumors with surgery or medication. In 1930, however, no treatments existed, so Robert’s growth continued unchecked.
7 The Difficulties Of Being The Tallest
Living as a literal giant came with a hefty appetite. A typical teenage breakfast for Robert included eight eggs, a dozen slices of toast, several glasses of orange juice, five cups of coffee, and a mountain of cereal.
His massive frame strained his heart, which had to pump blood all the way to his extremities. By age 10, his feet turned cyanotic—blue from poor circulation—and he lost sensation, often not noticing injuries until they became severe.
At 14, a minor stumble while pushing a boy on a tricycle broke two bones in his feet, forcing him to wear an iron brace. As an adult, he relied on leg braces and a cane almost as tall as an average person, yet he never needed a wheelchair.
Everyday life was a series of obstacles: he had to sit with legs straight, causing his feet to protrude and trip people; chairs risked collapse under his weight; doorways required stooping; ceilings were too low for him to stand straight. Hotels required multiple beds pushed together, and movie theaters were essentially off‑limits.
6 Adult Life
By age 19, Robert had stretched to 262 cm (8 ft 7 in) and earned the title of the world’s tallest man. His hands measured 32.4 cm (12.8 in) from fingertip to wrist, and his arm span reached about 2.9 m (9.5 ft). He wore shoes size 37—47 cm (19 in) long—and was working on a pair of size 39 at the time of his death. At his heaviest, he weighed 223 kg (492 lb) and devoured roughly 8,000 calories a day.
In 1936, he toured the United States with the Ringling Brothers Circus, turning public appearances into his primary income. At 20, he struck a deal with the International Shoe Company, becoming a paid spokesman and receiving custom $100 shoes for free. Over his career, he visited more than 800 towns across 41 states, covering over 500,000 km (300,000 mi). He also joined the Freemasons, likely making him the tallest member ever.
5 Sized Items
Robert’s daily life demanded custom‑made gear. Every article of clothing required three times the usual amount of fabric. His shoes, besides being massive, needed reinforced metal components and special materials to endure the stress of his weight.
At home, he slept on a 2.9‑meter (9.5‑ft) bed. For his shoe‑spokesperson tours, his father stripped out the front passenger seat of their family car, allowing Robert to stretch his legs out in the back—effectively turning a seven‑person vehicle into a three‑seater.
In 1937, his parents drafted plans for a house built to his scale: doors 2.7 m (9 ft) high, ceilings 3.4 m (11 ft) tall, stairs 0.6 m (2 ft) deep, and a 3‑meter (10‑ft) bathtub that would have required a foundry‑cast at a cost of up to $1,000. The house never materialized.
4 ‘The Gentle Giant’
Robert earned the affectionate nickname “Gentle Giant” for his quiet, good‑natured demeanor. In his spare time, he enjoyed photography and stamp collecting, but most of his days were spent in the spotlight of crowds.
Outside his hometown, any short walk attracted onlookers who often stepped on his feet. He generally shrugged off the attention, replying, “No, I just overlook them.” However, he grew weary of repetitive questions about his diet and the classic joke, “How’s the weather up there?” At 18, he told a reporter he hadn’t heard a new joke about his height in three years.
Robert sometimes slipped his camera into his massive hands, concealing it while the lens peeked out between his thumb and forefinger, allowing him to snap candid shots of unsuspecting crowds.
3 The Court Case
On June 2, 1936, Dr. Charles Humberd visited the Wadlow family. According to the Wadlows, Humberd was rude, and Robert refused any further examination. Humberd retaliated by publishing a scathing article in the Journal of the American Medical Association (JAMA), labeling Robert “surly,” “apathetic,” “antagonistic,” and “vapid.” He also questioned Robert’s intelligence and accused him of having “defective attention.”
The family sued Humberd for libel, arguing his claims were based on cursory observation. Witnesses refuted his characterizations, but the judge ruled the Wadlows could not prove the statements were inaccurate on the day Humberd met Robert. The family chose not to appeal.
2 Robert’s Death
On June 27, 1940, Robert’s height was measured at a final 272 cm (8 ft 11 in). A few days later, he marched in the National Forest Festival parade in Manistee, Michigan. The following morning, he ran a fever of 41 °C (106 °F). Doctors discovered that a newly fitted iron brace had caused a large blister on his right ankle—an injury he barely felt due to poor sensation in his lower limbs. The blister became infected and septic.
Because hospitals lacked a room large enough for him, Robert stayed at a hotel while bedridden. Despite medical efforts, the infection persisted, and he passed away in his sleep at 1:30 a.m. on July 15, 1940.
1 Aftermath
More than 40,000 mourners attended Robert’s funeral in Alton, and every local business closed in respect. He was interred in Oakwood Cemetery, requiring two grave plots.
His coffin measured 3.3 m (10.8 ft) long and weighed 450 kg (1,000 lb), demanding 18 pallbearers. The casket extended beyond the hearse’s rear, so a black cloth covered the overhang. Fearing his body might be exhumed for research, the family placed the coffin in a solid concrete vault. His simple tombstone reads “At Rest.”
To prevent his belongings from becoming “freak memorabilia,” the Wadlows destroyed most of his possessions. A few items survived, and in 1985 a life‑size statue of Robert was erected at Southern Illinois University of Dental Medicine in Alton.