Hormone secreted by the pineal gland of the brain. Its primary role is to regulate our “internal clock”, which holds a critical role in when we are awake and when we fall asleep. Melatonine is highly sensitive to light. When the environment is bright melatonine production is supressed, and it is dark its production increases.
When exposed to dark conditions during the day and light during the night our “internal clock” is disrupted, resulting in sleep difficulties. Such examples include working on a shift, jet lag or poor vision.
Moreover, scientists believe that melatonine production decreases with age. According to the European Food Safety Authority (EFSA) melatonine reduces the time needed to fall asleep and aleviates the symptom of jet lag. Because of its functions, melatonine can be found in dietary supplements for insomnia.