Those ‘biological age’ tests probably can’t tell you how fast you’re aging

Don’t waste money on tests that promise to tell you how fast you’re aging, researchers say. A new study suggests that we don’t know enough about the body’s aging process for them to be useful.
Plenty of expensive tests claim that looking at your genes, a drop of blood, or other physical indicators can tell you your “biological age” — or how fast your body is physically breaking down, regardless of what the calendar says. There is evidence that these mark