People with attention deficit hyperactivity disorder (ADHD) frequently read warnings on their medication bottles instructing them to avoid usage if they have structural heart problems or another pre-existing heart condition.

Diabetes can lead to a variety of complications, including kidney disease, foot amputations, and eye problems. Even the brain can be affected by diabetes.

Dietitians have long promoted the health benefits of a diet rich in fish, vegetables, non-refined cereals, olive oil and even some red wine. A Mediterranean-based diet, while nutritionally healthy, may also ease problems of sleep apnea.

Bright light is often credited for arousing us and keeping us awake.  It is even known to have an antidepressant effect. But if light is responsible for arousing us, is darkness to blame for make us sleepy? 

Light therapy, classically referred to as heliotherapy, has been used for years to treat seasonal affective disorder. Originally it was believed that the eyes were the only source of photosensitivity.

Painkillers are prescribed to ease a patient's suffering. But millions of Americans are misusing prescription painkillers, resulting in an epidemic of fatal overdoses.

When kids have a father who is depressed, they are far more likely to experience their own emotional or behavioral problems. Paternal mental health problems have a significant effect upon children, research shows.

Being lonely can be heartbreaking - but it can also lead to trouble sleeping. The feelings of loneliness might break up a normal night's sleep, creating added distress for those who feel lonely.

After a stroke some patients may find it easier to quit smoking. There may be a good reason for that. Smokers who intended to stop prior to the stroke and those who have a particular area of their brain damaged by stroke are more likely to quit.