THIS WEEK’S WORD OF THE DAY QUIZ IS POSITIVELY FELICIFIC
Words nearby melatonin
Example sentences from the Web for melatonin
This helps us regulate our cortisol and melatonin levels for a proper wake and sleep cycle.
One more thing, take it in the morning otherwise it can disrupt your sleep since vitamin D and melatonin are inversely related.These Are The 15 Supplements to Keep In Your Medicine Cabinet|Ari Meisel|December 28, 2013|DAILY BEAST
Worse, disruption of melatonin can contribute to obesity and cardiovascular disease as well.These 3 Apps Will Help You Sleep Better, Feel Great, and Eat Well|Dave Asprey|December 18, 2013|DAILY BEAST
A dose of melatonin in the morning resets your body clock later while a dose in the afternoon resets it earlier.
British Dictionary definitions for melatonin
Word Origin for melatonin
Medical definitions for melatonin
Scientific definitions for melatonin
A Closer Look
Melatonin, a natural hormone manufactured by the pineal gland in the brain, communicates information about light to different parts of the body. It helps regulate biological rhythms and plays an important role in the reproductive cycles of many animals. In humans it is best known for helping to regulate the body's circadian sleep-wake cycle. Melatonin production is affected by light exposure to the eyes; melatonin levels rise during the night and fall during the day, becoming almost undetectable. Though it does not actually induce sleep, melatonin can have sleep-promoting effects. Experiments have shown that at high doses melatonin lowers body temperature, decreases motor activity, and increases fatigue. Melatonin production starts falling after puberty, and it can virtually disappear in the elderly, a phenomenon which could help to explain why sleep disturbances are more prevalent among older adults. Marketed as a dietary supplement and touted as a cure-all for insomnia, jet lag, and even cancer and aging, the overall effects of melatonin on human health are still largely unknown.