Biohackers live by the mantra, “Test, don’t guess” — figure out how well your cells and organs are aging, so you know the lifestyle changes to make and the supplements to take for a longer, healthier ...

A quick, two-minute cheek swab could help identify children at risk of a rare but potentially fatal heart condition, researchers have found. Arrhythmogenic cardiomyopathy (ACM), an inherited disorder, ...