We know we are supposed to make healthy lifestyle choices. But how much of an effect do choices like diet, exercise and non-smoking really have on our lifespan?

Scoring a goal by heading the ball sure looks cool on TV. Heading in soccer is not known to cause any major injuries either. Why the concern then?

Balanced blood sugar keeps energy circulating through the brain. Several studies have explored the effect of blood sugar levels on that major organ, which controls every other organ and aspect of the human body.

The 'oms' and deep breaths with yoga can bring calmness and peace. And the focus can also make the brain sharper and respond faster.

Designated driver does not mean "the most sober person in the group," but for many people that has been the case. Designated driver really means "the sober person in the group."

Feeling a lot of stress day after day can take its toll over the years. Even without specific health conditions, excessive mental stress may be linked to unexplained aches and pains.

Diabetes has been linked to dementia. But diabetes alone may not be the cause of this type of mental decline. Heart disease risk factors may be the real driver behind cognitive impairment.

When workers can't get outdoors during the day, sitting next to a window is the next best thing. The light exposure can improve sleep quality and physical well-being.

One decision pregnant women must make is how much to test for possible disorders in their baby. More tests with fewer risks are becoming available for conditions like Down syndrome.

Bullying in schools has gained a lot of media attention due to the high number of teenage suicides in recent years. Many of these suicide victims were lesbian or gay victims of bullying.