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Melatonin and Dietary Sources for Improved Sleep
Table of Contents
Published: August 25, 2025, 09:14:08 AM PDT
Understanding Melatonin and the Sleep-Wake Cycle
Melatonin is a hormone primarily known for regulating the body’s natural sleep-wake cycle, also known as the circadian rhythm. Its production increases in the evening as darkness approaches, signaling the body to prepare for sleep. However, melatonin isn’t solely produced internally; it can also be obtained thru dietary sources.
Dietary Sources of Melatonin
While the body naturally produces melatonin, certain foods contain measurable amounts of this hormone. Consuming these foods may contribute to improved sleep, especially when incorporated into a balanced diet and healthy sleep routine. According to a study published in MDPI, melatonin can be obtained directly from foods including eggs, fish, nuts, and seeds. Another MDPI study highlights the presence of melatonin in seeds .
Here’s a breakdown of melatonin content in some common foods (values are approximate and can vary based on factors like growing conditions and processing):
| Food | Approximate melatonin Content (ng/g) | Source |
|---|---|---|
| Eggs (yolk) | 1.3 – 3.3 | MDPI Study |
| Fish (Salmon) | 0.8 – 1.5 | MDPI Study |
| Walnuts | 0.5 – 1.1 | MDPI study |
| Flax Seeds | 0.2 – 0.7 | MDPI Study |
Its important to note that the amount of melatonin in food is generally lower than the amount produced by the body or available in supplemental form. Though, incorporating these foods into your diet can contribute to a more natural and sustained release of melatonin.
The Impact of Timing and Diet on sleep
Beyond simply *what* you eat,*when* you eat can significantly impact sleep quality. Eating a large meal close to bedtime can interfere with sleep, as digestion requires energy and can disrupt the body’s natural relaxation processes. However, a small, melatonin-rich snack a few
