Imagine receiving a test result that tells you your body is biologically five years older than your chronological age. You exercise regularly, eat well, and are happy. What have you been doing wrong? Can this test be trusted?
Dozens of companies are marketing products that promise to reveal a person's true biological age, for a price ranging from around $30 to over $1,000. These products are based on epigenetic aging clocks, research tools that estimate age based on a person's DNA. But scientists say these tests aren't helpful for tracking your health.
Get the world's most fascinating discoveries delivered straight to your inbox.