Certain types of weight-loss surgery change the way your body deals with the nutrients in the foods you eat. This causes a rapid amount of weight loss, but also may lead to complications.

You will need to decide who to tell about your HIV status, and how to tell them. In some cases, you may be required to tell. In other cases it may be best to keep it to yourself.

We've come a long way in our understanding of HIV and AIDS. But there is still discrimination against people with HIV/AIDS.

Antibiotics are medicines used to kill bacteria. Over time, certain groups of these germs may adapt to these medicines. They may change in such a way that antibiotics can't kill them. This is called antibiotic resistance.

Primary ovarian insufficiency, or POI, is when the ovaries stop working normally before the age of 40. With POI, the ovary does not release an egg each month as it should. POI has been called premature ovarian failure and premature menopause.

Pelvic congestion syndrome is a condition that causes chronic pelvic pain. It is thought to be caused by problems with the veins in the pelvic area. This is the lower part of your abdomen.

An ovarian cyst is a fluid-filled sac that forms on or inside an ovary. Read on to learn about the causes and types of ovarian cysts, risk factors, symptoms, diagnosis, and treatment.

Carnitine is a natural substance that the body uses to process fats and produce energy. Carnitine deficiency is when not enough of the nutrient carnitine is available to cells in the body. Read on for details about this condition.

Aortic valve regurgitation is when a person's aortic valve leaks. The aortic valve is 1 of the heart's 4 valves. These valves help the blood flow through the heart and out to the body. Normally, the aortic valve stops blood from flowing back into the left ventricle. With aortic valve regurgitation, some blood leaks back through the valve as the heart relaxes.

A lung nodule is a small growth on the lungs.