May 8, 2013 |
The links between sleep and cancer are now so many, you could build a chain. A new study has found that for men who suffer insomnia and unwelcome wakefulness, the risk of prostate cancer is greater than for those whose sleep is undisrupted. That research expands on a growing body of evidence that men and women whose sleep is short, broken or of poor quality are at higher risk of developing a wide range of cancers. Research has long linked overnight shift work -- and the circadian rhythm disruptions that are common with it -- as a risk factor for breast cancer and endometrial cancers in women.
October 25, 1994 |
Of constitutions some are well or ill adapted to summer, others are well or ill adapted to winter. --Hippocrates Several years ago when Army psychiatrist Dr. Matthew E. Levine was transferred to the northern Alaska outpost at Ft. Wainwright, he noticed a common complaint among his patients. During the long nights of winter, many of those who sought his help were suffering from severe depression.
February 17, 2010 |
Riding in school buses in the early morning, then sitting in poorly lighted classrooms are the main reasons students have trouble getting to sleep at night, according to new research. Teenagers, like everyone else, need bright lights in the morning, particularly in the blue wavelengths, to synchronize their inner, circadian rhythms with nature's cycles of day and night. If they are deprived of blue light during the morning, they go to sleep an average of six minutes later each night, until their bodies are completely out of sync with the school day, researchers from Rensselaer Polytechnic Institute reported Tuesday in the journal Neuroendocrinology Letters.
July 25, 2012 |
TV sets, laptops, iPads and iPhones are modern society's instruments for increased productivity, social connectedness and entertainment after a long day's work. Ironically, a new study published in Molecular Psychiatry shows that these devices also contribute to an increase of major depressive disorder. The 24-hour society made possible by the advent of the electric light bulb has come at a significant biological cost. Light at night disrupts the body's natural circadian rhythms and has been linked to breast cancer, heart disease and obesity.
August 1, 1986 |
The human circadian rhythm, a tyrant that dominates human existence, may be reset far more easily than previously believed, according to a new study in today's issue of Science magazine. The study comes at a time of increasing research into the mysterious, periodic cycles that govern life, and such studies are yielding new knowledge that is of potential benefit to millions of people who work non-traditional hours.
May 12, 2003 |
When the occasional night spent walking the floor with a crying baby or rocking a toddler becomes a common occurrence, pediatricians often advise a little pharmaceutical help. A survey of 671 mostly suburban pediatricians showed that 75% had recommended sleeping medication for a child within the last six months. But few studies have examined the effectiveness of sleeping medicines in children, and no medication has been approved for them by the Food and Drug Administration.
October 25, 1999
For some people who suffer from insomnia, traditional treatments such as behavior therapy and prescription drugs produce undesirable side effects or don't work. This makes folk remedies and alternative health treatments for insomnia very popular. But do they work? Here is what some experts say: Warm milk: Milk contains the amino acid tryptophan, which is touted to alleviate stress and produce serotonin, a brain chemical that helps control sleep.
August 23, 2010 |
As summer winds down, another new school year brings fresh notebooks, sharp pencils and — for many kids — a new cycle of sleep deprivation. With classes that start as early as 7 a.m. and buses that pull up long before sunrise, some 80% of American kids in grades 6 through 12 are falling short of sleep recommendations during the school year, according to research by the National Sleep Foundation, a sleep advocacy group. Overtired kids, studies suggest, struggle with depression.
December 15, 2010 |
If you’re feeling just a little depressed and lethargic this time of year, go ahead and blame the universe – specifically the sun. The cause may be seasonal affective disorder, which ties the blahs to waning winter sunlight. SAD, as it's called, usually affects people who live in northern states where days are short and darker during winter months. This HealthKey article lists symptoms as: "… Oversleeping, daytime fatigue, carbohydrate craving and weight gain as signs of SAD, as well as symptoms of generalized depression, such as decreased sexual interest, lethargy, hopelessness, suicidal thoughts and loss of interest in your normal activities.