Why Sleep Quality Deteriorates and Does Melatonin Really Help?
Sleep disturbances are among the most common complaints in modern life. A large portion of people experience insomnia, late bedtimes, frequent awakenings, and morning fatigue. Naturally, this raises questions such as: “Does melatonin help?” or “What is melatonin, and how does the melatonin hormone affect the body?”
Although melatonin is sometimes presented as a universal solution for insomnia, the reality is more complex. The issue is not just taking melatonin — hormone balance, particularly understanding cortisol and why it rises at night, also plays a significant role.
Melatonin is a biological signal naturally secreted by the pineal gland in darkness. Its main function is to inform the body that it is time to sleep. Melatonin levels rise when it’s dark and decrease when exposed to light.
However, modern lifestyles disrupt this mechanism:
Exposure to screen light at night
High stress levels
Prolonged phone use before sleep
Late caffeine consumption
Irregular sleep schedules
All of these factors weaken the natural rhythm of melatonin, leading to sleep disturbances.
It’s not enough to look at sleep issues solely from melatonin’s perspective. Another key hormone in the sleep mechanism is cortisol.
What is cortisol?
Cortisol is a stress hormone, which normally:
Is high in the morning (to support waking up)
Should decrease in the evening (to allow melatonin to signal sleep)
Stress, anxiety, prolonged psychological tension, and screen usage can cause cortisol to rise at night. In such cases, even taking melatonin may not be effective because the body does not respond to the sleep signal.
In some cases, a cortisol test is recommended to clarify the situation.
The topic of melatonin dosage is quite complex. Although many people prefer the 3 mg dose, it is not a universal standard for everyone.
General guidance:
1 mg → gently adjusts the biological clock
3 mg → used to shorten the time it takes to fall asleep
5 mg or higher → reserved for special cases (e.g., jet lag or as prescribed by a doctor)
High doses can sometimes complicate sleep and increase nighttime awakenings.
Melatonin may:
Reduce the time it takes to fall asleep
Help normalize circadian rhythm
Facilitate sleep during periods of stress
Reduce nighttime awakenings
Speed up biorhythm recovery during jet lag
However, the answer to “what is melatonin” is never “a miraculous sleep pill.” It primarily plays a supportive role in sleep.
If melatonin is taken but does not help, the cause is often not melatonin deficiency but disruption in cortisol rhythm.
Signs that cortisol may be high include:
Difficulty falling asleep
Morning fatigue
Low energy during the day
Mental fatigue
Persistent feelings of anxiety
In such cases, melatonin alone will not solve the problem.
Sleep problems have multiple causes: irregular schedules, late caffeine consumption, stress, screen light exposure, or simply an active brain late at night. While melatonin signals the body to fall asleep, high cortisol levels can block this signal.
What is melatonin and can it be taken every day?
It is a natural hormone, but long-term continuous use is not recommended.
Does 3 mg of melatonin completely solve insomnia?
It works for some people but may be ineffective for others.
What are the benefits of melatonin?
Helps to fall asleep, regulates sleep rhythm, supports recovery from jet lag.
What is cortisol and how does it affect sleep?
It is a stress hormone. High levels at night reduce the effect of melatonin.
When is a cortisol test needed?
If sleep problems persist and the cause is unclear.
Can children use melatonin?
Only with a doctor’s prescription.
Sleep is one of the body’s most vital processes, and disturbances rarely have a single cause. While melatonin is an important factor supporting sleep, other elements like cortisol, lifestyle, and sleep hygiene are also critical.
Melatonin can be helpful, but to fully address sleep problems, the underlying causes must be properly assessed.
EN − AZN
