Shelly Fan in Singularity Hub:
A drug that slows aging may already be on the market.
Scientists have long been interested in metformin, a widely prescribed drug used to treat Type 2 diabetes, for its potential to delay aging. In worms, fruit flies, and rodents, the drug—on average less than a dollar per pill—shows promising anti-aging effects.
Last week, a study in Cell added to the evidence that metformin could slow the ravages of time. Scientists gave male monkeys aged the equivalent of 52 to 64 in human years a daily pill for three years and monitored their physical health and cognition. Compared to naturally aging monkeys, metformin preserved their learning and memory abilities, reduced brain shrinkage, and restored their neurons to a more youthful state. The monkeys’ “brain age” was dialed back by almost 6 years, or around 18 human years.
Metformin’s effects extended beyond the brain. The drug reduced chronic inflammation—a hallmark of aging—in multiple tissues, slowed liver aging, and boosted cellular mechanisms that protect the liver. Kidneys, lungs, and muscles were also “rescued” from age-related problems, their gene expression profiles reverting to more youthful ones. The study bridges the gap between rodents and primates. The dosages of metformin given were on par with those for diabetes management and could inform upcoming clinical trials.
More here.
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