Metformin, the world’s first anti-aging drug will be tested on humans next year in trials that could result in people being able to live healthily well into their 120s.
Scientists now believe it is possible to stop people growing old as quickly and consign diseases such as Alzheimer’s and Parkinson’s to history.
Although it might seem like science fiction, researchers have already proven that the diabetes drug metformin extends the life of animals, and the Food and Drug Administration in the U.S. has now given the go-ahead for a trial to see if the same effects can be replicated in humans.
If successful, it will mean that a person in their 70s would be as biologically healthy as a 50-year-old.
Aging expert Prof. Gordon Lithgow, of the Buck Institute for Research on Aging in California, is one of the study advisers. He said: “If you target an aging process and you slow down aging then you slow down all the diseases and pathology of aging as well. That’s revolutionary. That’s never happened before.
“But there is every reason to believe it’s possible. The future is taking the biology that we’ve now developed and applying it to humans.”
Aging is not an inevitable part of life, because all cells contain a DNA blueprint that could keep a body functioning correctly for ever. Some marine creatures do not age — or grow weaker as time passes — at all.
However, over our lifetime, billions of cell divisions must occur to keep our bodies functioning correctly and the more times cells divide the more problems grow, and cells can no longer repair damage.
Scientists think the best candidate for an anti-aging drug is metformin, the world’s most widely used diabetes drug, which costs only about 25 cents a day.
Metformin increases the number of oxygen molecules released into a cell, which appears to boost robustness and longevity.
When Belgian researchers tested metformin on the tiny roundworm C. elegans the worms not only aged slower, but they also stayed healthier longer.
Last year Cardiff University found anecdotal evidence that when patients with diabetes were given the drug metformin they lived longer than others without the condition, even though they should have died eight years earlier on average.
The new clinical trial is scheduled to begin in the U.S. next winter. Scientists from a range of institutions are currently raising funds and recruiting 3,000 70- to 80-year-olds who have, or are at risk of, cancer, heart disease and dementia.
A baby girl born in 2014 in Canada is expected to live to an average age of 84 years, and a boy to 80, according to Statistics Canada. But if the results seen in animals are reproduced in humans, lifespan could increase by nearly 50 per cent, to about 120.
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