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Caption: John Tinniswood says he was quite active as a young man.Article information
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“No special secret.”
This was the response of John Tinniswoodthe world’s oldest man, when asked on his birthday how he had reached his peak 112 years.
Born on August 26, 1912, in the north-west English city of Liverpool, Tinniswood told the Guinness Book of Records that he had “not the slightest idea” why he had lived so long.
The centenarian – who lives in a nursing home in Southport, near his home town – became the world’s oldest person in April when Juan Vicente Pérez Mora, the Venezuelan who had previously held the record, died aged 114.
Tinniswood recalls being just 2 years old when World War I broke out, and having just turned 27 when World War II began.
As a young man he worked in an administrative position in the Army Pay Corps (the British Army’s financial affairs branch), locating stranded soldiers and organising food supplies, and is now the oldest surviving World War II veteran of the world.
Image source, Getty Images
Caption: Tinniswood was just 2 years old when World War I broke out.
He met his wife, Blowden, at a dance in Liverpool, and they married in 1942.
Their daughter Susan was born in 1943 and the couple enjoyed 44 years together before Blowden died in 1986.
After the end of the war, Tinniswood worked as an accountant for Shell and BP before retiring in 1972.
“Fish and chips on Fridays”
Tinniswood recounted that it was “quite active as a young man” and that he walked “a lot,” but believed he was “no different from the others.”
“You either live long or you live short, and there’s not much you can do about it,” he added.
He also pointed out that, apart from eating a portion of fish and chips (a typical British dish, especially in coastal towns and cities) on Fridays, he did not follow any particular diet.
“I eat what they give me and everyone else does the same thing,” he says. “I don’t have a special diet.”
Image copyright PA Media
Caption: Tinniswood lived through both world wars.
Useless question
While it is tempting to ask not just Tinniswood but anyone who has ever crossed the 100-year mark how they did it, many experts consider this to be nonsense, as we will gain no valuable information from their answers.
As Bradley Elliott, professor of Human Physiology and researcher in the field of aging biology at the University of Westminster, explains in an article in The Conversation, examples such as Tinniswood illustrate the phenomenon known as “survivor bias”.
This is the “cognitive and statistical bias that occurs when counting only those who are close to being counted, but ignoring those who have not ‘survived,’” Elliott notes.
“There are phenomenal examples of older human beings, many of whom are faster, fitter and stronger than me on many measurements we do in the lab, even though they are twice my age,” Elliott continues.
“While we know that the exercise they do throughout their lives is associated with their exceptionally good health in old age, We cannot say directly that one thing causes the other.”
Image source, Getty Images
Caption: Knowing that Tinniswood ate fish and chips once a week doesn’t have much value from the point of view of how to overcome the 100-year barrier.
“It could be that highly active people are protected against chronic diseases such as cancer, diabetes and heart disease. But it could also be that these people remain active in old age because they have not suffered from cancer, diabetes or heart disease earlier in their lives,” explains the expert.
That is to say, correlation does not mean causation.
And while at the population level there are many factors that can improve our health and life expectancy – including improvements in healthcare and hygiene, as well as a healthy lifestyle – at the individual level there are many other causes, including luck.
*With contributions from Gemma Sherlock of KeynoteUSA News and PA Media.
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