
07/08/2025
{Researchers identify signs of aging at the molecular level, scanning tens of thousands of blood samples and nasal swabs. But there are so many surface-level signs, too — signals you can track without a lab.
If you’ve blown out the candles at least 34 times, it’s time to pay attention. Are your jeans fitting the way they used to? Does one night of drinking now cost you an entire weekend? Are you getting sick more often? Does your skin seem thinner or more wrinkly? Are you waking up in the night? Do your hips regularly ache in the morning? Is an everyday task (like carrying groceries up the stairs) much harder?
An aging surge brings weight gain, muscle loss, rising cholesterol levels, poor immune regulation and compromised carbohydrate metabolism. All are telltale markers that you’re slowing down. But that doesn’t mean they have to show up in your 30s…or slam you at 60.
There’s a difference, after all, between chronological age and “biological age,” which is an individual’s estimated internal age, based on lifestyle, genetics and environment, measured at the cellular level. This is now big business, as pricey labs offer motivated adults a chance to look under the hood — and possibly come back armed with something to brag about at a dinner party.
Instead of obsessing over your precise biological age, though, I’d recommend honing in on the stuff that we know keeps it in an ideal range. Skip the test, dive straight into the protocol and trust that you’ll be able to feel the difference, whether you’re approaching your late 30s or already past them. (Yes, it’s possible to turn back your physiological age)}
You can’t stop aging, but you can slow it down. Follow these five steps.