Martta Kelly

A man in China who spent years battling a methamphetamine addiction has had a device inserted into his brain to treat his addiction, according to news reports.

Researchers have identified a possible biomarker for the degenerative brain disease called chronic traumatic encephalopathy, or CTE.

More than two-thirds of women and three-fourths of men in the U.S. are now either overweight or obese, according to a new study.

There has been a significant increase in traumatic spinal cord injuries in older adults in the U.S., according to a new study.

The vast majority of teenagers now surf the Internet when they want answers to questions about their health, a new nationwide survey finds.

For people with varicose veins, laser therapy remains the best option for treatment, a new study says.

Older women who exercise -- even less than the recommended amount -- still decrease their risk of developing breast cancer, a new study finds.

Young men in the U.S. military are more likely to have erectile dysfunction than their civilian counterparts, but few military men get treatment, according to a new study.

Older adults who tech novices, but learned to use an iPad showed improvements in their thinking and memory skills, a new study finds.

Drinking alcohol excessively is responsible for 1 in 10 deaths among working-age adults, according to a new study from the Centers for Disease Control and Prevention (CDC).

In women, depression and heart disease may be linked, a new study finds.

Boys and girls react differently to caffeine after puberty, according to a new study.

What do people who live to be over 100 eventually die from? A new study holds clues.

The painful skin condition shingles is on the rise in the U.S. leading some to wonder whether the use of the chickenpox vaccine is to blame.

The number of cases of children ingesting magnets has tripled, resulting in serious injuries that require surgery, according to a new study.

Pregnant women -- especially those in their second trimester of pregnancy -- may be at increased risk of being in a car accident, a new study finds.

A short, intense bout of exercise before meals may help control blood sugar levels, a new study finds.

About 20 percent of women now will have pelvic surgery during her lifetime, nearly double the risk of having one of these surgeries in the 1990s, a new study says.

Couples may be more likely to divorce if the woman in the couple develops a serious illness, a new study suggests.

Kids may be more likely to help around the house if parents reinforce their self-identity as a good person, a new study suggests.

For some elderly people, apathy may be a signal that the brain is shrinking a bit faster than normal, a new study suggests.

Eating a diet high in saturated fat may increase women's risk of breast cancer, a new study suggests.

People who are fitter in their 20s may have sharper minds in their 40s and 50s, a new study finds.