Tag: "melatonin" at medical news

Mild head injuries increase risk of sleep disorders

...studies, and had their oral temperature and saliva melatonin measured. The study found 15 of the 42 patients, or 36 percent, had a CRSD. Of those, eight people had a delayed sleep phase syndrome with problems falling asleep and waking up, and seven people had irregular sleep-wake patterns. "The frequency ...

Effects of new sleep medication appear unlikely to have potential for abuse or cognitive impairment

...through a different pathway in the brain involving melatonin receptors and therefore may be less likely to cause such effects. Matthew W. Johnson, Ph.D., and colleagues at The Johns Hopkins School of Medicine, Baltimore, evaluated the potential for abuse and cognitive effects of ramelteon compared with place...

New sleep medication shows less potential to foster abuse and dependence

...n suggest that the drug's targeting of the brain's melatonin receptors rather than its benzodiazepine receptors make its subjective side effects different from those of old and new sedative hypnotics. The research is reported in the June issue of Behavioral Neuroscience, which is published by the American Psy...

New study finds that Ramelteon shows potential for circadian phase shifting

...l bed time experienced an advancement of dim light melatonin secretion offset compared to placebo, a model used...ours after lights out, patients were awakened, and melatonin levels were measured every 60 minutes for 10 hours. Melatonin is a hormone that plays a key role in...

Melatonin most effective for sleep when taken for off-hour sleeping

...lease of the hormone. Millions of Americans take melatonin supplements to improve their sleep, yet the results of prior studies on the efficacy of melatonin as a sleep-promoting agent have been mixed, according to the Agency of Healthcare Research and Quali...

Melatonin improves mood in winter depression

...ken in the afternoon. The Lewy team used afternoon melatonin to test if it was more antidepressant than melatonin taken in the morning, which causes phase delays. The researchers randomly assigned 68 SAD patients ...

The science of lost sleep in teens

...erty hits, the body's production of sleep-inducing melatonin is delayed, making an early bedtime biologically impossible for most teens. At the same time, the report notes, external forces such as after-school sports and jobs and early school start times put the squeeze on a full night's sleep. The result: A "...

No evidence that melatonin is effective in treating jet lag

There is no evidence that melatonin is effective in treating secondary sleep disorders.... Complementary and alternative therapies, such as melatonin (a hormone that is thought to play a part in controlling daily body rhythms) have been used increasi...

Artificial light at night stimulates breast cancer growth in laboratory mice

...eeping and waking cycles. The new study shows that melatonin also plays a key role in the development of cancer.... "These results are due to a direct effect of the melatonin on the cancer cells," said Blask. "The melatonin is clearly suppressing tumor development and growth...

Study demonstrates role of exercise in modifying melatonin levels

... as physical activity, influence the production of melatonin a hormone released mainly at night in the absence...role of physical activity in potentially modifying melatonin levels, thus creating biological evidence for a reduced risk of breast cancer among women who exerci...

The therapeutic role of melatonin in cancer worthy of study

The role of melatonin for the treatment of cancer is looking compelling,... consistent relationship. The association between melatonin levels and cancer progression has suggested to some that melatonin may be a modifier of cancer progr...

Other highlights in the July 20 JNCI

...at looks at the association between higher urinary melatonin levels and breast cancer risk, and a study examini...isk A new study has found that higher levels of a melatonin metabolite are associated with a lower risk of breast cancer. The production of melatonin--a hormone...

Overly tired teen? Sleepiness may signal serious health problem

...erty hits, the body's production of sleep-inducing melatonin is delayed, making an early bedtime biologically impossible for most teens. At the same time, the report notes, external forces such as after-school sports and jobs and early school start times put the squeeze on a full night's sleep. The result: A "...

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