Sunlight activates the body's stores of vitamin D, a vitamin shown to be beneficial to the immune system, bone health, and even in fighting cancer. New research shows that sunlight can also affect how the body deals with drugs.

The FDA has warned health care professionals that an antiretroviral drug used to treat HIV infection may lead to serious heart, kidney, and breathing problems in premature babies.

Around the world, millions of people face an increased risk of early death from diabetes and cardiovascular diseases related to diabetes. Researchers found that poor diagnoses and ineffective treatment are to blame.

Patients with end-stage renal disease who choose to undergo peritoneal dialysis have no greater risk of catheter infection than those who go through hemodialysis.

Health officials are attempting to track travelers who may have been exposed to measles after a passenger who was contagious passed through three major U.S. airports recently.

Even though research has found that over-the-counter cough and cold medications can lead to poisoning and death among children two years of age and younger, parents are still giving their children such medications.

Heart attack patients are less likely to receive priority care in emergency departments if they have a history of depression, according to a study by researchers at the Institute of Clinical Evaluative Sciences.

New research shows that elderly patients with undiagnosed high blood glucose may face an increased risk of dying in the hospital.

Most patients with locked-in syndrome -- resulting from brain stem injury, which leaves patients unable to move or communicate except via eye movements -- report they are happy.

Lack of health insurance coverage may affect hepatitis C patients' access to current antiviral treatments, according to a new study.