Real age versus biological age: the startups revealing how old we really are

Mail-order tests promise an estimate of how well you’re ageing but the results can be just one more thing to worry about

At the end of last year, Jay Chan, a 30-year-old marine engineer, bought his mother a biological age test from Elysium, a New York-based biotech and health supplements start-up founded in 2014. The test was simple – it required only a saliva sample – and it helped that it was being offered for half off the usual $499 (£400) price.

For fans of the self-described “longevity movement” like Chan, the concept of biological age is liberating. Rather than simply measure the passage of time, biological age aims to quantify the ageing of our body’s functions and even predict mortality. Many scientists and longevity advocates believe this information can not only help us understand our own ageing process, but can give us the power to change it.

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