Disrupted sleep and mistimed circadian rhythms are associated with four-fold increases in cancer risk, and multi-fold increases in risk for diabetes, metabolic syndrome, and cardiovascular disease.

“We see that when you don't have good sleep, and when you have highly fluctuating or highly variable periods where you're sleeping, and therefore mistimed circadian rhythms, that you have really four-fold increases in cancer risk, you have multi-fold increases in risk for diabetes and for metabolic syndrome, cardiovascular disease.”