What happens when the gift of life comes with complications? Recent cases of HIV transmission via organ transplants have doctors rethinking what they should tell patients about their donors.

Road crashes kill 1.2 million people every year and injure or disable as many as 50 million more. They are the leading cause of death among young people between 10 and 24 years. The World Day of Remembrance - the third Sunday of November each year - draws attention to the devastating consequences of these deaths and the need for action.

When the sniffles strike, many of us reach for a glass of orange juice or a vitamin C supplement. But are they really effective?

The former 'Charlie's Angel' star battles a disease that's rare but on the rise.

The valuable lesson Sandra Day O'Connor has taught us about Alzheimer's.

Women make up a growing percentage of new cases, so why are so many doctors still treating it like it's only a male disease?

4 transplant recipients get AIDS virus from donor; first known transplant case in US since '94

Whether you're a sporadic jogger or a dedicated sprinter, it's easy to slip into some bad habits. Here's how to avoid the most common ones.

An intergovernmental working group has made progress in developing a plan to ensure poor populations have better access to medicines and other health products.

A Harvard neurologist takes on the human nervous system and some of nature's most baffling diseases.

The fear of developing 'manboobs' surely strikes at the heart of men. What causes some men to develop breasts, and how it can be treated.

Nearly a quarter of all teens smoke, and only 4 percent manage to quit. But there may be good news this week on both the cessation and prevention fronts.

Former Intel CEO Andrew S. Grove says the pharmaceutical industry could learn a lot from the computer and chip businesses.

Lots of us carry little bottles of these alcohol-based gels to use as an alternative to hand washing, but do they work as well as soap and water?

Each catastrophe teaches psychologists more about how the mind copes.

New research reveals the biological roots of positive thinking. How a rosy outlook can affect your health.

Our war on microbes has toughened them. Now, new science tells us we should embrace bacteria.

Infertility is more difficult to diagnose and treat in men than in women, but new genetic research may lead to revolutionary remedies.

Economists and psychologists—and the rest of us—have long wondered if more money would make us happier. Here's the answer.

 Some nifty studies help explain how humans cope with the fact that death is inevitable. You owe your unconscious a great big thank-you.

There are no easy answers when parents with young kids become seriously ill. How new strategies help families cope.

Think you're doing yourself a favor by going with a 'healthy' restaurant entree or a 'diet' snack? Think again.