Lawrence Epstein, MD

Lawrence Epstein, MD is an Assistant Professor in Medicine at Harvard Medical School, the Assistant Medical Director of the Sleep Disorders Service and Program Director for the sleep medicine fellowship program at Brigham and Women’s Hospital in Boston. He is board certified in Internal Medicine, Pulmonary Diseases, Critical Care Medicine and Sleep Medicine. He is a Past President of the American Academy of Sleep Medicine and the Medical Editor of the Harvard Medical School Special Health Report: Improving Sleep.


Posts by Lawrence Epstein, MD

Why your sleep and wake cycles affect your mood

The body’s circadian rhythm controls our sleep-wake cycle, so an irregular rhythm can negatively affect sleep and proper functioning, which can lead to health problems including mood disorders. The tendency to rise early or stay up late is genetically determined, but you may be able to adjust your life to better match your circadian rhythm.