Children who feel left out, even for a little while, may be less active.

Men who smoke tend to have a more rapid mental decline than men who do not smoke, a new study shows. But the findings did not reveal a similar link between smoking and mental decline in female smokers.

About half of elementary school students still have access to sugary snacks and other unhealthy options in school vending machines, according to a new study.

You may have heard about brown fat -- a unique type of fat that acts like a furnace in the body to burn calories instead of storing them as excess weight.

Listeria contamination of hard-cooked eggs has led to recalls of prepared salads, sandwiches, and other products in 34 states.

Secondhand smoke exposure in cars has declined in U.S. middle and high school students between 2000 and 2009.

A new study shows that Internet dating sites help us get together, but they probably don’t make us any luckier in love, despite some companies’ claims to the contrary.

Small hits to the head may add up to injuries for high school football players, according to a new study by the Purdue Neurotrauma Group at Purdue University in West Lafayette, Ind.

When overweight people included two servings of purple potatoes a day in their diet for a month, they not only reduced their blood pressure, but they also didn't gain weight in the process, a small study shows.

Teens and young adults who text frequently -- such as more than 300 text messages a day -- may be risking more than sore thumbs, according to a new study.

New moms with asthma can safely breastfeed without worrying that the practice will increase their child’s asthma risk, a new study shows.

Researchers say they have developed a new blood test that may reliably detect depression.

When are “senior moments” just a normal part of healthy aging, and when are they a sign of something more serious such as Alzheimer’s disease? This is the million dollar question, and the Alzheimer’s Questionnaire, a set of 21 yes or no questions that can be answered by a loved one or caregiver, may help answer it.

People pleasers may want to steer clear of this weekend’s Super Bowl parties in order to avoid a dietary fumble.

Sex mistakes made by men who have sex with women are explained by experts.

If a play date turns bad, or even dangerous, it’s important to know how to handle both the children and the other parents involved. WebMD provides tips for tactfully dealing with rough kids.

The rate of sexually transmitted diseases (STDs) has more than doubled among middle-aged adults and the elderly over the last decade, but the reasons for this are unclear.

How you eat may depend on who you’re eating with, according to a study published in the online journal PLoS ONE.

Two new studies shine a light on some lesser known consequences of heart failure: fractures and memory problems.

A disturbing 47% of people who have had a stroke have poorly controlled high blood pressure, researchers say.