Androgens are sometimes called the "male hormones."  They contribute to a man's sexual functions and are associated with secondary characteristics like chest and facial hair.

One consideration in undergoing in vitro fertilization (IVF) treatment to have a baby is how many embryos to transfer into a woman's womb at once. One? Two? Three?

Patients with a severe form of aplastic anemia may not see a benefit with traditional therapies. However, a platelet-enhancing drug could be an option for individuals with the rare blood disorder.

Inflammatory bowel diseases (IBD) such as ulcerative colitis and Crohn's disease are major risk factors for colorectal cancer. Why? Because these diseases cause constant inflammation - something cancer thrives on.

Tramadol, marketed as Ultram in the US, is an opioid pain medication that works like morphine. In about five to 10 percent of people, tramadol does not work well.

Vitamin D plays a central role in keeping people healthy. Learning about the metabolic effects of this vitamin may help older women maintain a healthy body weight.

The first "test tube baby," Louise Brown was born in July, 1978. Now, 34 years later, she's one of 5 million babies born by in vitro fertilization (IVF).

Scientists are beginning to realize that cancer tumors are as unique as the people in whose bodies they form. This reality was borne out in recent pediatric brain cancer research.

What makes a woman more likely to use effective contraception? Scientists are still exploring all of the social, economic and cultural reasons. A recent study confirms one important link: Attitude plays a role.