Young children who have delays in learning and development might face multiple obstacles as they grow, including behavior difficulties.

Insomnia doesn't just affect patients at night — they often feel tired and less focused during the day, too. But patients may also experience back pain as a result of their sleepless nights.

Major depressive disorder and obesity have previously been connected to chronic conditions like cancer, high blood pressure and diabetes. But major depressive disorder and obesity may also be connected.

After a stroke, patients often show slower brain function. But declining memory and attention in stroke-free adults may be a risk factor for future strokes.

Facing social pressures, body image issues and many other factors, middle school students sometimes experience depression. A fitness regimen may be one way to help.

Smoking cigarettes is a proven cause of cancer and other medical conditions. But some people may continue to use tobacco even after they have had cancer.

Electronic cigarettes are booming in popularity and sometimes touted as a helpful tool for quitting smoking. But, because they are relatively new, there is limited knowledge about their health effects.

Alzheimer's disease is often thought of as a part of aging, but it may not have to be. New research suggests a certain vitamin may help prevent the disease.

Antidepressants affect the moods of countless people with depression around the world. But they may also affect their waistlines.

Previous research has suggested that low levels of blood oxygen associated with sleep apnea could prompt cancer development. But new research suggests that may not be the case.