 So they talk about how researchers are looking for clues about why some types of cancers are on the rise in young adults. And they say they found an interesting lead, a connection to accelerated biological aging. What does that mean? So aging is the major risk factor for many types of cancers, meaning the older that you get, the more likely you are to be diagnosed. And increasingly, experts recognize that age is more than just the number of candles on a birthday cake.