By Dana G. Smith – New York Times –
New tests promise to tell you if you have the cells of a 30-year-old or a 60-year-old. Here’s what to know about them.
If you’ve ever been to a high school reunion, you know that some people seem to age faster than others. Twenty-five years after graduation, one classmate can appear a decade younger than the rest, another a decade older.
“People know that intuitively,” said Dr. Nir Barzilai, director of the Institute for Aging Research at the Albert Einstein College of Medicine, “but they don’t understand that it’s a biology that we’re trying to discover.”
