The first pill approved by the FDA for preventing HIV in healthy patients doesn't come without concern. Experts worry that the drug does more harm than good.

Patients with bladder cancer have several options, but the recent trend towards combination therapies can be confusing even for professionals.

You may have never heard of it before, but Chagas disease is threatening to become the next deadly epidemic. What is it, and why is it being compared to the early decades of AIDS?

Many parents know this scenario: the nurse at the doctor's office pulls out a needle and your child starts bawling. For many children, shots are scary. Now it seems some kids with arthritis don't have to face the needle.

Exercise is a crucial part of staying healthy for any human being. Physical activity is especially important for arthritis patients trying to reduce pain.

Lung cancer, prostate cancer, and breast cancer have roughly equal numbers of new cases diagnosed each year, but lung cancer is four times as fatal than the other two.

Certain types of heart arrhythmias may be dangerous and are associated with an increased risk of sudden cardiac death. Now researchers have found a genetic variant that appears to be associated with an increased risk of both.

Over the past few years a lot of molecular research has speculated on the possible effects that drugs that directly combat inflammation, such as aspirin, Tylenol, and Advil, may have on cancer development.

The female hormone estrogen can wreak havoc on a woman's body if it it gets out of hand, promoting the development of breast and endometrial (uterine) cancers.