Depression can make the most on-the-ball people feel like their brains are mush. In people with Alzheimer’s disease, depression may speed up disease symptoms.

The top causes of death in the US for people under 50 are not from disease. Extra caution while driving, saying no to drugs and leading a healthy lifestyle could go a long way to keep a person alive.

For healthy people, a drink or two can be okay. But for people with hepatitis C liver infections, a drink or two a day might be very dangerous.

The causes of autism increasingly appear to come from a variety of different risk factors. One of those risk factors may be related to the childhood experiences of the children's mothers.

A father's older age has already been linked to a risk for autism in children in past studies. Now researchers have turned their attention to grandfathers.

There is no doubt that pregnant women should not use meth. If they do, their babies could be at risk for underdeveloped brains and at future risk for mental disorders.

Partial vision loss can impact many daily activities. Coping with losing the ability to drive or read can take an emotional toll that may need treatment.

Falling asleep behind the wheel is scary. For commercial truck drivers, the long hours spent on the road can make it hard to stay alert.

Positive feelings can make a world of positive difference in a person’s health. For patients with failing hearts, however, negative feelings and depression can have the opposite effect.

While the exact cause of rheumatoid arthritis remains unknown, scientists are getting a better idea of what puts people at risk for this painful disease. It seems lifestyle may have a lot to do with that risk.