There's been a lot of news about the use of performance-enhancing drugs — or doping — in professional sports. But it's not just famous athletes who are using these drugs; young athletes are doping too.

Officials have been working to pinpoint the source of a foodborne parasite that has been causing illness across the US this summer. Now they may have found one culprit.

Bone marrow transplants are a possible treatment for chronic lymphocytic leukemia, a type of blood cancer, when it cannot be controlled by chemotherapy.

Improvements in medical technology and knowledge have meant tremendous progress in taking care of babies born extremely early and/or small. But many of these children still may face future challenges.

The body’s immune system is a line of defense against infection. But sometimes, the immune system acts up and attacks the body’s cells.

Pregnant women should always let their doctor know about health issues they might have. Often, these issues will not change their healthcare plan. Other times, it may mean more careful monitoring.

When you’re hungry, you may want to inhale a meal but not secondhand smoke. State laws prohibiting smoking in restaurants are delivering health benefits and not eating away at business.

Couples going through infertility difficulties are often anxious to try any possible treatment that may help in conceiving a baby. It's important to know what can actually make a difference in conceiving.

A tall cup of "bug juice" may call to mind memories of lazy summers during your childhood. But children today have many more options for sugary drinks — and it's making a difference to their waistlines.

"Do as I say, not as I do," may be an attractive saying for parents, but it may not work very well. When it comes to smoking in particular, children often follow their parents' examples.