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You can't buy good health but you can buy good health information. Check out these newly released Special Health Reports from Harvard Medical School:

Importance of Sleep : Six reasons not to scrimp on sleep

A recent survey found that more people are sleeping less than six hours a night, and sleep difficulties visit 75% of us at least a few nights per week. A short-lived bout of insomnia is generally nothing to worry about. The bigger concern is chronic sleep loss, which can contribute to health problems such as weight gain, high blood pressure, and a decrease in the immune system’s power, reports the Harvard Women’s Health Watch.

While more research is needed to explore the links between chronic sleep loss and health, it’s safe to say that sleep is too important to shortchange.

The Harvard Women’s Health Watch suggests six reasons to get enough sleep:

  1. Learning and memory: Sleep helps the brain commit new information to memory through a process called memory consolidation. In studies, people who’d slept after learning a task did better on tests later.
  2. Metabolism and weight: Chronic sleep deprivation may cause weight gain by affecting the way our bodies process and store carbohydrates, and by altering levels of hormones that affect our appetite.
  3. Safety: Sleep debt contributes to a greater tendency to fall asleep during the daytime. These lapses may cause falls and mistakes such as medical errors, air traffic mishaps, and road accidents.
  4. Mood: Sleep loss may result in irritability, impatience, inability to concentrate, and moodiness. Too little sleep can also leave you too tired to do the things you like to do.
  5. Cardiovascular health: Serious sleep disorders have been linked to hypertension, increased stress hormone levels, and irregular heartbeat.
  6. Disease: Sleep deprivation alters immune function, including the activity of the body’s killer cells. Keeping up with sleep may also help fight cancer.

Also in this issue of the Harvard Women's Health Watch

  • Six for 2006: Six reasons not to scrimp on sleep
  • In brief: Experts issue immunization guidelines
  • When thoughts become obsessions
  • In the News: Avian flu: Anticipated and closely watched
  • By the way, doctor: Do I need a Pap test after hysterectomy?
  • By the way, doctor: What causes red wine headaches?

More Harvard Health News »


About Harvard Health Publications

Harvard Health Publications publishes four monthly newsletters--Harvard Health Letter, Harvard Women's Health Watch, Harvard Men's Health Watch, and Harvard Heart Letter--as well as more than 50 special health reports and books drawing on the expertise of the 8,000 faculty physicians at Harvard Medical School and its world-famous affiliated hospitals.