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.

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.

Health risks can result from obstructive sleep apnea in both adults and in children. But some treatments in children may be tricky.

People often feel foggy when they haven't gotten enough sleep, and new research suggests a lack of sleep could significantly impair memory.

Mental health and physical health tend to be a two-way street — each can affect the other. Having PTSD can affect both, but recent research suggests some of the physical harms associated with PTSD may be the fault of another culprit.

People diagnosed with Parkinson’s disease often deal with tremors, stiffness and slow movement. They also may have more than their fair share of a more common complaint.

Being overweight can have a wide range of effects on people's overall health, both mental and physical. And n umerous studies have shown that increased weight is associated with a decrease in sleep at night.

Sleep is an important aspect of maintaining good health. So people with insomnia may wonder how their problem affects their health. They may have one less health concern to worry about.

Matters of health can't always be separated clearly into physical issues and mental issues. A new review examined one such overlap between physical and mental health — sleeping troubles in cancer patients.