Worried that recent controversy surrounding the safety of common sunscreen ingredient retinyl palmitate was causing some people to avoid sunscreen entirely, health professionals are speaking out to remind the public that sunscreen is an essential tool in preventative health care. Read more and get tips on choosing the healthiest sunscreen.

Drinking alcohol may help keep rheumatoid arthritis at bay, possibly because it dampens the body's immune response, new research suggests. Alcohol consumption may also protect people who already have the autoimmune disease from developing a more debilitating form. Nevertheless, it is essential to drink only in moderation, experts say. Read more.

A new animal study offers the first direct bit of evidence that ozone, a major component of smog, may trigger the death of heart cells. "[Ozone] can trigger a direct effect on cardiac tissue through a cascade of inflammatory mediators. The endpoint in this domino effect can result in death of heart cells - a heart attack, in essence," said expert Dr. Len Horovitz. Learn more.