Why are so many young people getting cancer?
Scientists don’t know yet, but diet, gut bacteria and microplastics could play a role
Since the 1990s, rates of early onset cancer, diagnosed before the age of 50, have been rapidly increasing around the world.
Tim Robberts/Stone/Getty Images plus; Sidi A. Bencherif, Thomas Ferrante/Wyss Institute at Harvard Univ.; adapted by T. Tibbitts