What's behind the drive to sleep separately? There are a number of reasons that couples find themselves considering separate bedrooms. Here are some of the most common.

Understanding how insomnia and other sleep problems contribute to hopelessness and thoughts of suicide can provide important new options for suicide prevention and treatment of depression and suicidal thoughts.

Understanding more about how sleep affects genetic function holds great promise in illuminating these pathways and could open important new avenues for both treatment and prevention of illness and disease.

We don't know from this study whether diet is influencing sleep or sleep is influencing food choice, or both. But the evidence is abundant that these two pillars of health -- sleep and diet -- affect each other in a number of ways. We've seen a great deal of research that diet and weight control are strongly influenced by sleep, and that too little sleep can make eating healthfully more challenging.

Of all the dangers faced by soldiers, sleep is not likely to top many people's lists. But soldiers, like the rest of us, face risks to health and safety from poor and insufficient sleep. And new research indicates they may be at significantly elevated risk for sleep problems, and sleep-related health issues.

Overall, much less attention has been paid to the possible health problems of snoring when it is not accompanied by sleep apnea. The research that has been done in this area has returned conflicting evidence regarding the health risks associated with snoring.

A new study suggests yet another reason that alcohol can be a roadblock to good sleep: The stimulating effects of alcohol are felt more strongly in the early evening hours. That evening drink you think is sending you toward slumber? It's likely doing just the opposite.

Over the past two decades, chronic fatigue syndrome has won acceptance by the medical establishment. But much about the disorder -- its causes, its mechanisms in the body -- remain largely unknown.

Biological changes are an important part of the teen-sleep picture, but they don't tell the whole story. Combined with these biological shifts are environmental and lifestyle factors that also can interfere with teens' sleep.

Here's some sobering and serious news for women: Sleeping poorly may double your risk of a form of high blood pressure that is not easily treated.

You've probably heard about how significant a role stress is believed to play in the development of illness and disease. Here's some sobering and important news: New research indicates that lack of sleep can be as damaging to the immune system as stress.