There is NO DEBATE about the fact that getting less than 7.5 hours of sleep causes obesity, diabetes, high blood pressure, dementia, and early death. We'll do a brief mention of science reviews of the literature. Here are some links to studies: https://www.hindawi.com/journals/ije/... http://journals.plos.org/plosmedicine... http://journals.plos.org/plosmedicine... Science has been there for a long time. Unlike the debate on low fat and plant-based vs low carb, there is absolutely no debate about the science in this area. Sleeping less than 7.5 hours causes diabetes, insulin resistance, obesity, hypertension, and death. About Dr. Brewer - is a physician that started as an Emergency Doctor. After seeing too many patients coming in dead from early heart attacks, he went to Johns Hopkins to learn Preventive Medicine. He went on the run the post-graduate training program (residency) in Preventive Medicine at Hopkins. From there, he made a career of practicing and managing preventive medicine and primary care clinics. His later role in this area was Chief Medical Officer for Premise, which has over 500 primary care/ prevention clinics. He was also the Chief Medical Officer for MDLIVE, the second largest telemedicine company. More recently, he founded PrevMed, a heart attack, stroke, and diabetes prevention clinic. At PrevMed, we focus on heart attack and stroke and Type 2 diabetes prevention by reducing or eliminating risk through attentive care and state-of-the-art genetic testing, imaging, labs, and telemedicine options. We serve patients who have already experienced an event as well as those who have not developed a diagnosis or event. Our team of senior clinicians includes internationally recognized leaders in the research and treatment of cardiovascular disease, preventive medicine, and wellness. We also provide preventive medicine by telemedicine technology to over 30 states.