AIDS stands for Acquired Immunodeficiency Syndrome. It is currently the leading cause of death in men between the ages of 25 and 44 in the United States, and is the fourth leading cause of death in women in this age group. AIDS is caused by HIV, the Human Immunodeficiency Virus, which attacks the body's immune system. Without immunologic protection, people with AIDS suffer from fatal infections and cancers. One can be infected with HIV and have no symptoms at all. On average, it takes about 7 to 9 years for symptoms to develop. Symptoms can include severe weight loss, fevers, headaches, drenching night sweats, fatigue, severe diarrhea, shortness of breath, and difficulty swallowing. The symptoms tend to last for week

The last common STD is Hepatitis B. Hepatitis B is an infection of the liver caused by a virus. It's 100 times more infectious than HIV. About 300,000 Americans get hepatitis B each year. Most people recover, but a few become chronic carriers with increased risk of serious problems later, such as permanent liver disease and cancer of the liver. Symptoms usually appear within 2 to 6 weeks after contact. They can include poor appetite, nausea, vomiting, headaches, general malaise, jaundice (yellowing of eyes and skin), dark-tea-colored urine, and light-colored stools. Even without symptoms, you can pass the virus to others. Chronic carriers carry the hepatitis B virus for the rest of their lives and unknowingly pass it to their sex partners.

Syphilis is a serious disease that can be debilitating and even result in death if left untreated. Anyone can have syphilis without knowing it and pass it on to others. There are an estimated 120,000 new cases of syphilis in the United States each year. It has three stages. During the first stage, a painless sore may appear at the spot where the bacteria first entered the body. This sore may appear around or in the vagina, on the penis, or inside the mouth or anus. Sores inside the vagina or anus are often

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