More evidence that adequate sleep is essential to weight loss.
A new study in the Annals of Internal Medicine shows that in overweight people who were on a restricted calorie diet, sleeping 5.5 hrs/night, as opposed to 8 hr/night resulted in the following bad changes for the sleep-deprived people:
- less fat loss and less fat metabolism
- increased hunger
- loss of fat-free mass (presumably including some muscle)
Sleep is vitally important to health in general, and weight loss in particular. Sleep deprivation is increasingly common in America. Also, many obese people have sleep apnea, which can produce a vicious cycle of sleep deprivation, hunger, eating, worse sleep… Sleep deprivation may also contribute to diabetes. And losing muscle is terrible – muscle burns fat 24/7.
Physician’s First Watch says:
Editorialists speculate that “perhaps sleep should be included as part of the lifestyle package that traditionally has focused on diet and exercise.”