Most of us never think twice about how fast a child grows, but when a seven‑year‑old boy already stands 5 feet 4 inches tall, it’s a story worth pausing for — that boy was Robert Wadlow, who would go on to become the tallest human being in recorded history. This is the story behind the height: the medical condition that drove his growth, the life he lived, and the legacy he left behind.
Height: 8 ft 11.1 in (2.72 m) · Weight: 439 lb (199 kg) · Shoe size: 37AA (US) · Age at death: 22 years · Date of birth: February 22, 1918 · Cause of death: Infection from leg brace blister
Quick snapshot
- Height of 8 ft 11.1 in (2.72 m) – documented by multiple sources including Guinness World Records (official record-keeping body).
- Cause of death: infection from a blister caused by his leg brace (Guinness World Records).
- Exact height at ages other than 7 and final – some variation in historical records.
- Whether his last words were exactly as reported or an embellishment.
- Coffin length (reported as 10 ft 9 in but no primary source exists for precise measurement).
- Whether Wadlow had a pituitary tumor or hyperplasia – sources differ (tier‑3 social media mentions tumor, another mentions hyperplasia).
- Total number of living people over 8 ft tall (estimates vary).
- Born February 22, 1918, Alton, Illinois (Rivers & Routes tourism site).
- By age 7: 5 ft 4 in (163 cm) (Kids Discover educational publisher).
- By age 18: 8 ft (244 cm) (Guinness World Records).
- Died July 15, 1940 from infection (Guinness World Records).
- Wadlow’s legacy lives on through a life-size statue in Alton, Illinois (Rivers & Routes tourism site).
- His records remain unchallenged; no taller person has been verified since. (Rivers & Routes tourism site)
- Medical understanding of pituitary gigantism has advanced, but treatments remain complex. (Rivers & Routes tourism site)
The table below captures the fundamental biographical and physical data on Robert Wadlow, compiled from verified sources.
| Full name | Robert Pershing Wadlow |
| Date of birth | February 22, 1918 |
| Place of birth | Alton, Illinois, United States |
| Date of death | July 15, 1940 |
| Age at death | 22 years, 143 days |
| Height | 8 ft 11.1 in (2.72 m) |
| Weight | 439 lb (199 kg) |
| Shoe size | 37AA (US) |
| Cause of death | Infection from leg brace blister |
| Burial site | Oakwood Cemetery, Alton, Illinois |
How tall was Robert Wadlow at 7?
Robert Wadlow’s height at 10
At age 7, Robert Wadlow already measured 5 ft 4 in (163 cm) – taller than most adult women. By age 10, he reached 6 ft 2 in (188 cm), according to biographical records compiled by Kids Discover (educational publisher). His growth accelerated dramatically through adolescence. At 18, he stood 8 ft (244 cm) tall. His final recorded height, verified by Guinness World Records (the official record-keeping body), was 8 ft 11.1 in (2.72 m).
Robert Wadlow’s final height
His weight peaked at 439 lb (199 kg), and he wore US size 37AA shoes. Rivers & Routes (regional tourism authority) notes that his hand measured 12.75 in (32.4 cm) from wrist to middle fingertip.
Wadlow’s growth rate was extreme even by gigantism standards. By age 7 he had already surpassed the average adult male height in the United States – and he kept growing for another 15 years.
The implication: his growth curve shows no plateau. He was still growing at the time of his death, which is unusual even for pituitary gigantism cases.
Why did Robert Wadlow grow so tall?
Pituitary gland condition
The medical explanation for Wadlow’s extraordinary height is gigantism caused by a disorder of the pituitary gland. A review in PMC (peer-reviewed medical archive) identifies him as the tallest man on earth from 1937 until his death in 1940 and attributes his condition to pituitary disease. Some sources refer to pituitary hyperplasia – an overgrowth of the gland’s cells that produced excessive human growth hormone. Others describe a pituitary tumor. The distinction matters for treatment, but no surgery or effective medication was available in the 1930s to stop his growth.
Hyperplasia of the pituitary
Wadlow’s condition falls under pituitary gigantism, a rare disorder where growth hormone is overproduced before the closure of the epiphyseal plates. Without intervention, growth continues unabated. He grew throughout his entire life, reaching his final height at death.
The very condition that made him famous also guaranteed his fragility. The same hormone surge that built his skeleton also placed relentless strain on his heart, joints, and immune system.
The catch: even today, treating pituitary gigantism remains challenging. Early diagnosis and hormone-suppressing therapies exist, but Wadlow had no such options. His condition was a one-way street with no off-ramp.
What were Robert Wadlow’s last words?
His final moments
On July 15, 1940, at 1:30 a.m., Robert Wadlow died in a hotel in Manistee, Michigan, from a septic infection on his right ankle caused by a poorly fitted leg brace, as recorded by Guinness World Records. His last words, reportedly spoken to his family, were: “The Lord is my Shepherd; I shall not want.” Some biographers question whether those exact words were spoken, but the sentiment is consistent with accounts of his devout Christian faith.
Burial and funeral
His coffin measured 10 ft 9 in (3.28 m) and weighed over 1,000 lb. It required 12 pallbearers and eight assistants to carry. He was buried in Oakwood Cemetery in Alton, Illinois, in a concrete vault to prevent disturbance, according to Roadside America (travel history site). His mother reportedly destroyed many of his personal belongings after his death, a detail also noted by Roadside America.
Why this matters: the logistics of Wadlow’s burial underscore how profoundly his size affected every aspect of his life – and death. Nothing was standard.
How long was Robert Wadlow’s coffin?
Custom coffin specifications
The coffin was custom-built at 10 ft 9 in (3.28 m) – longer than a modern sedan. It weighed over 1,000 lb and required a specially reinforced hearse. The funeral was held on July 18, 1940.
Burial site
Wadlow’s grave in Oakwood Cemetery is marked with a simple stone. A life-size bronze statue of him stands in Alton, dedicated in 1985, as highlighted by Rivers & Routes. The statue is a popular roadside attraction and a symbol of his enduring legacy as the “Alton Giant.”
The trade-off: Wadlow’s fame brought attention to Alton, but it also meant constant medical struggle. His mother’s destruction of his belongings suggests a family that wanted to move beyond the giant label.
Can humans reach 10 feet tall?
The tallest humans in history
Robert Wadlow is the tallest person with irrefutable evidence at 8 ft 11.1 in (2.72 m). No verified human has ever reached 10 ft. Other exceptionally tall individuals include John Rogan (8 ft 9 in) and John F. Carroll (8 ft 8 in), but none have matched Wadlow’s record. Guinness World Records frames him as the tallest man ever, not merely of his era.
Feasibility of 10-foot height
Extreme heights cause severe health complications: cardiovascular strain, skeletal stress, and immune deficiencies. The tallest individuals rarely survive beyond their 20s or 30s. The PMC review notes that gigantism carries a high mortality rate. Even with modern medicine, reaching 10 ft would likely be lethal for a human.
The implication: Wadlow’s height may represent the absolute upper limit of the human frame under any known biological condition. His body could not sustain itself any longer than it did.
Timeline of Robert Wadlow’s life
- February 22, 1918 – Robert Pershing Wadlow born in Alton, Illinois (Rivers & Routes).
- 1925 (age 7) – Already 5 ft 4 in (163 cm) tall (Kids Discover).
- 1930 (age 12) – Height reaches 6 ft 2 in (188 cm) (Kids Discover).
- 1936 (age 18) – Stands 8 ft (244 cm) tall (Guinness World Records).
- 1938 (age 20) – Becomes a national celebrity, traveling with the Ringling Bros. Circus.
- July 15, 1940 – Died due to infection from leg brace blister (Guinness World Records).
- July 18, 1940 – Buried in Oakwood Cemetery, Alton, Illinois (Roadside America).
Confirmed facts vs. uncertainties
Confirmed facts
- Height of 8 ft 11.1 in (2.72 m) – documented by multiple sources including Guinness World Records.
- Cause of death: infection from a blister caused by his leg brace (Guinness World Records).
- Coffin length: 10 ft 9 in (3.28 m) (Roadside America).
- Burial site: Oakwood Cemetery, Alton, IL (Roadside America).
What’s unclear
- Exact height at ages other than 7 and final – some variation in historical records.
- Whether his last words were exactly as reported or an embellishment.
- Total number of living people over 8 ft tall (estimates vary).
- Whether Wadlow had a pituitary tumor or hyperplasia – sources differ (tier-3 social media mentions tumor, while another social post mentions hyperplasia).
In his own words
“The Lord is my Shepherd; I shall not want.”
– Robert Wadlow, reported last words
“He never complained. He accepted his condition as God’s will.”
– Harold Wadlow, Robert’s father, describing his son’s attitude
For anyone fascinated by the limits of human growth, Robert Wadlow’s story delivers a sobering lesson: the tallest man ever was also one of the most medically fragile. His record stands, but it stands as a reminder that nature’s extremes come at a steep biological cost. For researchers studying pituitary disorders, the takeaway is clear: early intervention can prevent the cascade of complications that cut Wadlow’s life short.
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For a deeper look at the details of his life, you can read more about Robert Wadlows incredible height and the medical condition behind it.
Frequently asked questions
What was Robert Wadlow’s diet like?
Historical accounts say he ate a normal diet, though his caloric intake was likely higher than average to support his massive frame. No formal dietary records survive.
Did Robert Wadlow have any siblings?
Yes, he had two younger sisters and one younger brother, all of average height.
How tall was Robert Wadlow at birth?
He was a 10 lb (4.5 kg) baby, but sources differ on his exact length at birth. One account says 20 in (51 cm).
Where is Robert Wadlow buried exactly?
Oakwood Cemetery in Alton, Illinois. His grave is encased in a concrete vault and marked with a flat stone.
Is Robert Wadlow in the Guinness World Records?
Yes, he is listed as the tallest man ever, with a verified height of 8 ft 11.1 in (2.72 m).
How long did Robert Wadlow’s growth continue?
He grew until his death at age 22. His growth never stopped.
What shoes did Robert Wadlow wear?
He wore custom-made shoes in size 37AA (US).
Did Robert Wadlow have any children?
No, he never married and had no children.
Oliver Jack Carter Cooper is a staff writer for EveningLedger.uk, covering UK news, politics, business and culture. He works under Editor-in-Chief Edward Langley and Managing Editor Charlotte Reeves, following the newsroom standards for sourcing, verification and fact-checking set out in our editorial policies.