(HealthDay News) — Trillions of microscopic organisms live in and on your body. While that may be a scary thought, most of them are good for you, says the National Institutes of Health (NIH).

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Your body’s bacteria can help you digest food, protect against infection and maintain your reproductive health.

To protect your body’s bacteria, the NIH suggests:

  • Don’t pressure your doctor to give you an antibiotic. It may do more harm than good.
  • Know when to wash your hands, such as before eating or preparing food.
  • Don’t use antibacterial products you don’t need.
  • Don’t go overboard with hand sanitizers.
  • Experiment with skin moisturizers to see what’s best for you.

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