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tech 9 August 2026

The Impact of Melatonin on Morning Cognition in Healthy Young Adults (2023)

Melatonin, often seen as a sleep aid, may affect morning cognition. This article explores the latest research on its impact among young adults.

Article inspired by the original source
Melatonin impairs morning cognition in healthy young adults (2023) ↗ academic.oup.com

Introduction

Melatonin is widely used as a supplement to improve sleep, but its impact on morning cognition remains under-explored. A recent study published in 2023 highlighted lesser-known effects of melatonin on the cognitive performance of healthy young adults. This article examines these findings and discusses their implications for daily melatonin use.

Melatonin: An Overview

Melatonin is a hormone naturally produced by the pineal gland in response to darkness. It helps regulate the sleep-wake cycle. Melatonin supplements are commonly used to treat sleep disorders such as jet lag and insomnia. In 2022, the global melatonin market was valued at approximately $1.5 billion, reflecting its growing popularity.

2023 Study: Effects on Morning Cognition

A recent study examined the effect of melatonin on morning cognition in healthy young adults. Participants received a dose of melatonin before bedtime and were tested for various aspects of cognition the following morning, including attention, working memory, and processing speed.

Key Findings

The results showed that melatonin could impair certain cognitive functions in the morning. Participants exhibited a significant decrease in working memory and reduced attention compared to days without melatonin intake. These effects were particularly pronounced in the early hours after waking.

Potential Mechanisms

Researchers suggest that melatonin might influence morning cognition by prolonging the sensation of sleepiness or altering the circadian rhythm. Melatonin may also interact with other neurotransmitters involved in alertness and cognition.

Practical Implications

For young adults using melatonin to improve their sleep, these findings suggest it might be wise to reconsider the timing of this supplement, especially if they have tasks requiring high cognitive performance in the morning.

Towards Informed Use

While melatonin is generally considered safe, these new findings highlight the importance of understanding its effects beyond sleep improvement. Regular melatonin users should be aware of these potential impacts on morning cognition.

Conclusion

The 2023 study sheds new light on the effects of melatonin, indicating it can disrupt morning cognition in healthy young adults. For those relying on this hormone for sleep, it's crucial to weigh the benefits against possible cognitive alterations.

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