A study from British Columbia looked at the lung cells of 16 former smokers, half of whom had developed lung cancer. They say the process that dictates how genes influence cell development was altered in those with lung cancer. That made it more likely for cancer to develop. Experts say drugs could be developed to target the genes and force them to act normally.

Exercising can lower a woman's risk for breast cancer, but only if she's sleeping enough.

Researchers at the National Cancer Institute studied nearly 6,000 women who did not have cancer, then followed them for almost 10 years. They found the women who exercised the most had a significantly reduced risk for developing all types of cancer, including breast cancer. If they got less than seven hours of sleep a day, their risk went up.

Experts believe exercise lowers the risk for cancer by altering hormone levels, immune function and body weight.

The quest to get rid of wrinkles can be costly and risky according to the FDA.

The FDA received 930 reports of adverse events between January 2003 and September of 2008, all linked to cosmetic fillers. Fillers include the products used to plump skin and reduce scarring. Most of the reports included minor side effects, like swelling.  There were also reports of clumps under the skin, numbness, infection and rash.