Study links poor sleep to childhood obesity

"Today, many children are not getting enough sleep," he said in a news release from the American Association for Cancer Research. "There are a number of distractions, such as screens in the bedroom, that contribute to interrupted, fragmented sleep.

"This, perpetuated over time, can be a risk factor for obesity," he added. "Because of the strong links between obesity and many types of cancer, childhood obesity prevention is cancer prevention, in my view."