🌒 Melatonin as an Antioxidant and Oncoprotector: Laboratory and Clinical Data
What is known about melatonin's role beyond sleep regulation
Melatonin is a pineal gland hormone that regulates sleep and circadian rhythm. In addition, it acts as an antioxidant and is studied as a potential oncoprotector. We break down laboratory and clinical data.
What is melatonin
Melatonin is a hormone produced by the pineal gland in darkness. It regulates circadian rhythms and sleep. In addition, melatonin acts as an antioxidant and immune modulator.
- Pineal gland hormone.
- Regulates sleep and circadian rhythm.
- Acts as an antioxidant.
- Modulates immunity.
Antioxidant action
Melatonin neutralises free radicals and stimulates antioxidant enzymes. Unlike many antioxidants, it works in both aqueous and lipid environments of the cell, making it a universal protector.
- Neutralises free radicals.
- Stimulates antioxidant enzymes.
- Works in water and fat.
- Protects cells from oxidation.
Potential oncoprotector
Laboratory studies show that melatonin may affect the growth of some cell types. It is studied in the context of support in oncological conditions, but clinical data are still limited and need confirmation.
- Laboratory data on cell effects.
- Studied as an adjunct.
- Clinical data are limited.
- Needs further research.
Laboratory and clinical data
Some research studies melatonin as an adjunct in radiation and chemotherapy, and its role in protecting against oxidative stress. Many data are preliminary.
- Studied in radiation therapy.
- Adjunct role.
- Protection against oxidative stress.
- Data are preliminary.
Food: sources
Melatonin is found in some foods in small amounts. From ordinary food it is practically impossible to reach a therapeutic dose.
| Food | Content | Comment |
|---|---|---|
| Cherry | ~0.1 mcg/100 g | Low |
| Walnuts | ~0.03 mcg/100 g | Traces |
| Rice | Traces | Very low |
Dosages
| Goal | Dose | Comment |
|---|---|---|
| Sleep | 0.5–3 mg | 30–60 min before |
| Antioxidant | 1–5 mg | Evening |
| Onco-support | High | Doctor only |
Practice
- Melatonin for sleep — 0.5–3 mg in the evening.
- A dark bedroom boosts production.
- Reduce blue light in the evening.
- Antioxidant effect is under study.
- Onco-support — only with a doctor.
What is melatonin?
A pineal gland hormone that regulates sleep and circadian rhythm.
How does melatonin act as an antioxidant?
It neutralises free radicals and stimulates antioxidant enzymes.
Is melatonin an oncoprotector?
Studied as a potential one, but clinical data are limited.
Does melatonin cure cancer?
No, it does not replace standard cancer therapy.
How much melatonin for sleep?
Usually 0.5–3 mg 30–60 minutes before sleep.
Is there melatonin in food?
In trace amounts (cherry, nuts) — not enough for a dose.
Is melatonin safe?
Safe in moderate doses; high doses need medical supervision.
What boosts melatonin production?
Darkness and reduced blue light in the evening.
Where is melatonin produced?
In the pineal gland in darkness.
When to take for the antioxidant effect?
In the evening, 1–5 mg, on recommendation.