A study of 1486 men and women published in the Archives of Internal Medicine in 2005 has shown that people who get either less than 6 hours sleep a night or more than 9 hours have a higher risk of developing Impaired Glucose Tolerance, which is defined as a fasting plasma glucose level of more than 5.3 mmol/L or 95 mg/dL and is particularly prevalent amongst women who have PCOS, or Diabetes Mellitus another disease for which women with PCOS have a significantly increased risk of developing.
Association of Sleep Time With Diabetes Mellitus and Impaired Glucose Tolerance
Daniel J. Gottlieb, MD, MPH; Naresh M. Punjabi, MD, PhD; Ann B. Newman, MD, MPH; Helaine E. Resnick, PhD; Susan Redline, MD, MPH; Carol M. Baldwin, RN, PhD; F. Javier Nieto, MD, PhD
Arch Intern Med. 2005;165:863-867