Melatonin is a natural hormone secreted by the pineal gland. This gland, located in the brain, plays a key role in regulating the sleep-wake cycle. Melatonin is also available as a dietary supplement, primarily used to improve sleep quality and regulate the sleep cycle.
How does melatonin work?
It is our biological clock, as it sends signals and regulates the circadian rhythm, which helps the body distinguish between day and night. The highest concentration of this supplement occurs between midnight and three in the morning. The mechanism of action of melatonin is complex but can be described in the following scheme:
Regulation of the circadian cycle -> melatonin helps regulate our circadian cycle by informing the body about the time of day and night. This is the main factor regulating our sleep and wakefulness.
Reducing sleep onset -> it can shorten the time needed to fall asleep by reducing arousal and preparing the body for sleep.
Improving sleep quality -> in addition to shortening the time to fall asleep, it can also improve sleep quality, providing a deeper, more restorative sleep.
Regulation of the sleep-wake cycle -> it helps synchronize our internal biological clock with the day-night cycle. This is important for maintaining a healthy sleep-wake rhythm.
When to use melatonin?
This supplement is most commonly used to improve sleep quality in people with sleep disorders, such as insomnia, and in people working night shifts. It is also often used by people during or after travel to alleviate symptoms of fatigue associated with time zone shifts, known as jet lag.
Dosage and supplementation
The dosage of melatonin can vary depending on individual needs and health conditions. The usually recommended dose is between 0.5 to 5 milligrams an hour before bedtime. It is always advisable to consult a doctor before starting supplementation, especially if there are any other health conditions or if you are taking other medications.
It is a safe supplement, but some side effects may occur, such as drowsiness, fatigue, dizziness, nausea, or mood changes. Therefore, it is important to follow the dosage recommendations and consult a doctor if there are any doubts.
It can be an effective tool in improving sleep quality and regulating the sleep-wake cycle. However, it is always important to consult a doctor before starting supplementation. It is necessary to follow the dosage recommendations to ensure the safety and effectiveness of melatonin use.
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