Before explaining what melatonin is, do you know, your body works on circadian rhythm which regulates your sleep cycle?
Melatonin hormone secreted from the pineal glands of the brain, controls this circadian rhythm or the internal clock of your body. It controls the time to sleep and wake up!
The melatonin levels in our body increase in the absence of light and decrease with its presence thus, controlling the sleep pattern. However, those who work during night and sleep at the daytime face real problems to have a natural circadian rhythm and develop sleeping disorders gradually.
The problem lies among frequent travelers too. As they travel through different time zones, sleep their body clock gets confused and disrupts the normal pattern. Most of the times, they are treated with sterke slaappillen to get rid of jet lag.
Our ancestors had less exposure to artificial lights at night, which made them sleep comfortably at night. Also, with an increase in age, production of melatonin decreases which causes sleep deprivation. Women with menopause go through hormonal imbalance which can lead to a dysfunctional body clock. All of these can be treated with dosages of melatonin.