You can't do anything about your chronological age, but it might be possible to turn back the clock on "biological age," a small new study suggests.
The study found that a drug regimen appeared to reverse biological age, as measured by changes to DNA that accumulate as we get older.
In the study, nine healthy volunteers — all white men between 51 and 65 years old — took a cocktail of growth hormone, a diabetes medication, and a hormone supplement as part of a drug trial funded by the biomedical firm Intervene Immune in Los Angeles. Each volunteer self-administered the mixture a few times a week for a year, after which scientists took a look at their DNA. Distinctive marks adorning the DNA suggested that participants had shed 2.5 years off their biological ages, on average.
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