Researchers have discovered how melatonin suppresses neurons in the brain that keep you awake and alert. Their findings could lead to new therapies for those who suffer from insomnia.
An estimated 50 to 70 million Americans have some type of sleep disorder, according to the National Sleep Foundation. Some turn to melatonin supplements to help them fall asleep. Melatonin is a hormone known to promote sleep, but its underlying mechanisms are unknown.