Vaginal bleeding and discharge are a normal part of your menstrual cycle. If you notice anything different or unusual, talk with your health care provider.
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The immune system works to keep germs out of the body and destroy any that get in. It is made up of a complex network of cells and organs.
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Women suffer more frequent and severe symptoms from STDs. Some STDs can cause pelvic inflammatory disease, which can lead to both infertility and ectopic pregnancy.
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AIDS is caused by the human immunodeficiency virus, which kills or impairs cells of the immune system and progressively destroys the body's ability to fight infections and certain cancers.
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