Insomnia usually becomes a problem if it occurs on most nights and causes distress or daytime effects such as fatigue, poor concentration, and irritability. It predisposes to mental disorders such as depression, anxiety disorders, and psychotic disorders; to physical problems such as infections, high blood pressure, obesity, and diabetes; and to motoring and other accidents. The relationship between insomnia and psychological symptoms is far from simple, as insomnia can both cause, and be caused by, depression, anxiety, and stress, opening up a vicious circle.
Depression and anxiety: Depression is more common in persons with disabilities than in the general population. Also, we know that signs of distress and depression tend to increase as people with disabilities age from young adulthood (18 to 44 years old) into middle age (45 to 64 years old), although we also often see improvement in depression as people age from middle age into older ages (65 years and older). Sleep problems such as difficulty falling asleep and early morning waking are common symptoms of depression, anxiety, and other mood problems.
SOURCES: Sleep Medicine, Kryger, Meir, et al., Third Edition, 2000. Sleep: "Excessive Daytime Sleepiness and risk of Occupational Injuries in Non-shift Daytime Workers," Vol. no. 3. Sleep: "Dose-response Relationship Between Sleep Duration and Human Psychomotor Vigilance and Subjective Awareness," Vol. 22, No. 2. Sleep: "We Are Chronically Sleep Deprived," Vol. 18 No. 10.
If your circadian rhythm is off, it negatively impacts your sleep quality. So having that consistent rhythm of going to bed and getting up at the same time will actually make your sleep more regenerative at night. Going for a walk outside and getting that sunlight in the morning is the best thing to do to wake up. Your circadian rhythm isn’t a fixed thing: It’s actually shiftable based on your environmental cues.
Other potential health benefits: Glycine has been shown to improve both memory and attention in young adults. Scientists are actively investigating the use of glycine in the treatment of neurodegenerative disorders such as Alzheimer’s disease. Higher levels of glycine have been associated with a lower risk of heart attack, and there’s some evidence that glycine may help protect against high blood pressure. It also may help strengthen bones and joints, and guard against arthritis.
Keep precautions in mind. Diphenhydramine and doxylamine aren't recommended for people who have closed-angle glaucoma, asthma, chronic obstructive pulmonary disease, sleep apnea, severe liver disease, digestive system obstruction or urinary retention. In addition, sleep aids pose risks for women who are pregnant or breast-feeding, and might pose risks to people over age 75, including an increased risk of strokes and dementia.
Sleep also is important for good health. Studies show that not getting enough sleep or getting poor quality sleep on a regular basis increases the risk of high blood pressure, heart disease, and other medical conditions. In addition, during sleep, your body produces valuable hormones. These hormones help children grow and help adults and children build muscle mass, fight infections, and repair cells. Hormones released during sleep also affect how the body uses energy. Studies find that the less people sleep, the more likely they are to be overweight or obese, develop diabetes, and prefer eating foods high in calories and carbohydrates.*
An average adult needs between 7.5 and 8 hours of sleep per night. “But many people can function with 6 hours' sleep, and there also some who need 9 hours or more,” says Sudhansu Chokroverty, MD, professor and co-chair of neurology and program director for clinical neurophysiology and sleep medicine at the New Jersey Neuroscience Institute at JFK Medical Center in Edison, N.J.
TEMPERATURE: This is a big problem, especially if you have a sleep partner. Everyone has different natural body temperatures, and usually men run hotter than women, but it can go either way. That can be a big issue if you have a different body temperature, because then no one’s happy. I wrote this article called “Split blankets, not beds,” where I said that you shouldn’t share the same comforter. Of course it’s nice to share, and I do that at some points, but it’s also important to have different bedding on your bed so you can have that lighter sheet or comforter to try to mitigate differences in body temperature. There’s also something called a chili pad. You put on half of your bed and it’ll dictate the temperature level on your half if you run at a different temperature than your sleep partner.