People who are conscientious and prone to "doing the right thing" are less likely to develop Alzheimer's disease as they age, according to a long-running study of Catholic nuns, priests and brothers.

If your mood, energy level, and motivation decline in November but bounce back to normal in April, you may have seasonal affective disorder (SAD), one expert says.

Women who followed at least five certain lifestyle and diet behaviors were about 80 percent less likely to have infertility from ovulatory disorders than women who followed none of the behaviors, a Harvard study concludes.

Meditating for just 20 minutes a day for five days helped to increase energy and decrease anxiety and stress, as measured by levels of stress hormones, a small study found.

New research is taking a little of the mystery out of the phenomenon known as the "out-of-body" experience.