Do you want to know when you will die? I really don’t | Helen Pilcher

A new test can tell you exactly how well you’re ageing.

But as research has shown, too much knowledge about your mortality can be bad for your health

In the season 5 finale of The Kardashians, the family took a https://www.trudiagnostic.com/">commercially available blood test to discover how fast their bodies were ageing.

It came as little surprise, given their privileged lifestyles, that the reality TV stars were said to be ageing more slowly than most mortals of the same age.

Khloé, then 39, found she had a https://www.eurekalert.org/news-releases/1052694">biological age of 28.

Cue https://nypost.com/2024/07/25/entertainment/khloe-kardashian-40-learns-her-biological-age-is-28/">whoops of joy and much smugness.

The Kardashians join a https://www.businessinsider.com/goop-labs-health-span-are-vegan-fasting-diets-anti-aging-2020-1">growing list of https://www.marieclaire.co.uk/entertainment/celebrity-news/katy-perry-justin-trudeau-address-age-gap">celebrities who have taken similar tests and then crowed about their “biological ages”.

Now, there’s a https://www.nature.com/articles/s41586-026-10542-3">new test on the block.

Helen Pilcher is a science writer and the author of https://guardianbookshop.com/this-book-may-cause-side-effects-9781805461432/">This Book May Cause Side Effects