Unveiling the Role of Circadian Rhythms, Melatonin, and affron®
Our body is governed by a sophisticated network of biological rhythms and hormones. At the center of this system lies the circadian rhythm, the internal clock that synchronizes essential physiological processes with the day–night cycle. Among these, the sleep–wake cycle is one of the most crucial, strongly regulated by melatonin. Let’s explore how circadian rhythms, melatonin, and saffron — specifically Affron® — are interconnected.
Circadian Rhythms: The Body’s Internal Clock
Circadian rhythms regulate sleep, metabolism, hormone release, and many other functions. Light exposure is their main regulator, aligning our physiology with nature’s cycles. When disrupted, these rhythms can contribute to sleep disturbances, metabolic imbalance, and even mood disorders.

Melatonin: The Sleep Hormone
Melatonin, produced in the pineal gland as light decreases, signals the body to prepare for rest. It plays a central role in sleep regulation, promoting deep, restorative rest and maintaining balance with the day–night rhythm.
Affron® and the Sleep Connection
Recent research has highlighted saffron (Crocus sativus L.) as a natural ally for sleep. Affron®, a premium saffron extract, has demonstrated the ability to stimulate the body’s own melatonin production.
An in vivo study showed that Affron®:
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Enhanced enzymes that convert tryptophan into melatonin.
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Reduced enzymes that divert tryptophan into the kynurenine pathway (associated with stress and inflammation).
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Increased serum melatonin while reducing kynurenine levels.
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Upregulated genes linked to melatonin synthesis in the pineal gland.
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Downregulated genes driving kynurenine production in both pineal gland and liver.
This dual action improves the body’s ability to naturally generate melatonin, without relying on external supplementation.

Why Endogenous Melatonin Matters
Since only a small portion of tryptophan normally becomes melatonin, Affron®’s impact is particularly relevant. By tipping the balance toward melatonin production and away from kynurenines, Affron® supports healthier sleep regulation.
Key benefits include:
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Safety: no reported side effects such as headaches, dizziness, or residual drowsiness.
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Applicability: suitable for populations with impaired melatonin metabolism, such as older adults, and even for adolescents.
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Consistency: unaffected by factors like smoking, diet, or medication, thanks to high bioavailability and rapid absorption.
The reason behind these effects is Affron®’s unique composition — its “fingerprint” — which ensures reproducibility and efficacy batch after batch.
Conclusion
Understanding circadian rhythms and melatonin highlights the importance of prioritizing healthy sleep for overall wellbeing. With its unique ability to promote natural melatonin synthesis, Affron® emerges as a safe, science-backed solution to support restorative sleep.