If you have trouble going to sleep or staying asleep, you're not alone. Many people know how frustrating these problems can be. But sleep problems aren’t just annoying; they could be unhealthy.

Poor sleep disturbs the body in all sorts of ways. Snoring affects our breathing, how much oxygen the body gets and how much sleep we need. And all of this may play a role in cancer risks.

Difficulty sleeping is a common problem during pregnancy. Women often report being unable to sleep comfortably. However, how pregnant women sleep might affect their babies.

Sleep apnea is a serious condition that requires treatment regardless of a person's age, sex or race. However, the severity of the disorder can vary among people with different backgrounds.

Most groggy teens drag themselves to school by 7:30 most morning. This is a familiar sight to both parents and teachers. Everyone knows that insufficient sleep is common for teens, but few understand that it can also be the source of weight issues.

Poor sleep is linked to a wide range of possible ailments. However, it also works the other way around. Poor sleep can also be a sign that illness is contributing to the bad sleep.

When counting sheep and hot herbal tea doesn't work, people may turn to sleeping pills to help get a good night's rest. But the long-term risks of these medications may not be worth it.

It's frustrating enough when you toss and turn, unable to fall asleep. It's worse when you can't stay asleep. And now it seems these sleeping problems may affect more than your rest.

Taking sleeping medication may help you get to sleep in the evening. But it may also make you a less alert and possibly more dangerous driver the next morning, according to the FDA.

A trip to Mars involves all kinds of challenges for the human body. It would take over a year just to get there and back. How will astronauts' bodies cope in terms of sleep cycles?