Researchers have found that young people around the world are getting many different kinds of cancer at alarmingly high rates. And as the diagnoses of celebrities and public figures like Kate Middleton, Chadwick Boseman, Dwyane Wade, and Olivia Munn bring mass attention to the issue, scientists are racing to answer a question on the minds of many outside the medical profession: Why is cancer, historically a disease of old age, increasingly striking people in the primes of their lives?
