Rita Rubin, MA JAMA. Published online May 15, 2019. doi:10.1001/jama.2019.4701 One of the first studies to suggest that insufficient sleep can disrupt metabolism came out 2 decades ago. And yet, despite growing evidence that inadequate slumber is a risk factor for obesity and diabetes, approximately a third of US adults sleep fewer than the 7 hours a night recommended by the American Academy...