(HealthDay News) -- Well-made sunglasses do more than make you look like a movie star. They can protect your eyes from many problems, including those caused by the sun's harmful rays.

(HealthDay News) -- A bunion is a bump that forms on the joint at the base of the big toe. It can be quite painful, especially when you put on shoes or walk.

MONDAY, Feb. 11 (HealthDay News) -- Among white men, exercise may cut the risk of developing prostate cancer, and it may also lower the odds of aggressive disease in those who already have the cancer, a new study indicates.

MONDAY, Feb. 11 (HealthDay News) -- Happiness seems be a generational thing, new research suggests. Life satisfaction generally increases with age, but a person's overall level of satisfaction appears to depend on when he or she was born.

MONDAY, Feb. 11 (HealthDay News) -- When children go through a trauma -- whether it's as rare as a school shooting or as common as a car accident -- they may need therapy to help them deal with it. But new research finds that experts know little about which types of therapy actually work.

MONDAY, Feb. 11 (HealthDay News) -- Scientists who identified 24 new genes linked to nearsightedness say their discovery could lead to improved treatments or ways to prevent the condition.

MONDAY, Feb. 11 (HealthDay News) -- Teen birth rates have dropped yet again, reaching a historic low, and the number of babies being born early or with a low birth weight has also declined, a new U.S. government report shows.

MONDAY, Feb. 11 (HealthDay News) -- Preliminary research produced promising results for a cancer-fighting drug that piggybacks on a virus similar to the one used in the smallpox vaccine.

MONDAY, Feb. 11 (HealthDay News) -- Being born by cesarean section has been tied to higher risks for various health problems in children, and now a new study finds these babies also have fewer "good" bacteria in their digestive tract.

Here are some of the latest health and medical news developments, compiled by the editors of HealthDay: