As daylight fades, levels of melatonin begin to rise about 1-3 hours before bedtime, nudging us to become sleep
In the morning, when the light hits the eyes, it signals the brain to halt melatonin production, and we grow alert
M deficiency syndromes
depression
anxiety
insomnia
excessive fatigue
night eating syndrome
high blood pressure
sensitivity to stress
neurodegenerative disorders
Taken at the right time, in the right dose, M can repair a sleep schedule thrown off kilter by jet lag, a long weekend filled with late nights, certain circadian rhythm disorders
Those who took melatonin before bed fell asleep faster on average and slept longer
For some people, M can have a mild hypnotic effect
M has its limits as a remedy for general sleeplessness
M supplements appear to be safe when used short-term, and less is known about the long-term safety
M taking can have a big effect on treating circadian rhythm disorders like delayed sleep-wake phase disorders
M works for some people, but not for others, so you just have to try it and find out which one you are
If you are an extreme night owl who only begins to feel sleepy at 4 a.m. and likes to sleep until noon you can take low-dose M (0.5 milligrams) at 11 p.m., well before your natural melatonin kicks in
M can be helpful for children with autism spectrum disorders in cases of abnormal M pathways and lower than normal its levels
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