Exposure to even dim light at night is enough to cause physical changes in the brains of hamsters that may be associated with depression, a recently released study shows. Researchers found that female Siberian hamsters exposed to dim light every night for eight weeks showed significant changes in a part of the brain called the [...]
Research findings presented at Sleep 2009, the 23rd Annual Meeting of the Associated Professional Sleep Societies, a link exists between the severity of obstructive sleep apnea (OSA) and weight gain.
Results indicate that people with an apnea-hypopnea index (AHI), the average of the combined episodes of apnea and hypopnea that occur per hour of sleep, of over 15 had an increase in body mass index (BMI) of 0.52 kg/m2 compared to those with an AHI between five and 15, who saw an increase of 0.22 kg/m2.
Individuals with sleep-related breathing disorders appear to burn more calories when resting as their conditions become more severe, according to a report in Archives of Otolaryngology–Head & Neck Surgery.
Sleep-related breathing disorders include snoring, sleep apnea, and other conditions in which airways are partially or completely obstructed during sleep. “Obesity is a major risk factor for the development of sleep-disordered breathing, and changes in body weight are associated with changes in sleep-disordered breathing severity,” the authors wrote.
Girls moving through adolescence may experience unhealthy levels of weight gain, but the reasons for this are not always clear. In fact, many potential causes of weight gain are easily overlooked. A study soon-to-be published in The Journal of Pediatrics analyzes the effect of Internet usage, sleep, and alcohol and coffee consumption on weight gain in adolescent girls.
Dr. Catherine Berkey and colleagues from Harvard Medical School, Brigham & Women’s Hospital, and Washington University led the Growing Up Today Study (GUTS), which surveyed more than 5000 girls between the ages of 14-and-21 years of age from all 50 states.
Got memory problems? If you suffer from obstructive sleep apnea, your brain could be to blame. UCLA researchers have discovered that people with sleep apnea show tissue loss in brain centers that help store memory.
Reported in the June 27 edition of the journal Neuroscience Letters, the findings emphasize the importance of early detection of the disorder, which afflicts an estimated 20 million Americans.
“Recent data on the long-term effectiveness of bariatric surgery on BMI suggest that, for most patients, BMI will be maintained substantially below preoperative levels, though some patients regain weigh and relapse toward morbid obesity,” the authors conclude. This subgroup may carry genetic susceptibilities to obesity that overcome the effects of bypass surgery.
Ever have one of those days when it’s the middle of day and you just can’t stay awake? If it happens frequently, it may be an indicator of obstructed nasal passages and sleep-disordered breathing, according to a study published in the October 2007 edition of Otolaryngology – Head and Neck Surgery.
Women who sleep five hours or less per night weigh more on average than those who sleep seven hours, according to a study. The study demonstrated that women who slept for six hours were 12 percent more likely to have major weight gain and six percent more likely to become obese compared with women who slept seven hours a night.
Other findings from the study showed women who slept for five hours per night were 32 percent more likely to experience major weight gain (defined as an increase of 33 pounds or more) and 15 percent more likely to become obese over the course of the 16-year study compared with women who slept seven hours.
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As of May 2, 2009 at 9:47 p.m. (-0500) (ET), the U.S. population
was 306,340,710. Sleep researchers estimate approximately seven percent
of the population suffers from obstructive sleep apnea. Using that
estimate, there are potentially 21,443,850 apneics in the U.S.
~~ Apnea around the world ~~
As of May 2, 2009 at 9:47 p.m. (-0500) (ET), the world population
was 6,777,286,604. Sleep researchers estimate approximately seven percent
of the population suffers from obstructive sleep apnea. Using that
estimate, there are potentially 474,410,062 apneics in the world.
