Discovering Glycine: Your Next Step Toward Better Sleep


Sleep is not a luxury but a fundamental pillar of our health. Insufficient or poor-quality sleep has been linked to a range of health issues, from impaired cognition and mood swings to chronic conditions like heart disease and diabetes. In our bustling, always-on society, many people struggle to get a good night’s rest. If you find yourself tossing and turning, the solution could lie in an amino acid you’ve probably never heard of – glycine. Let’s take a deep dive into this remarkable amino acid and uncover how it can help enhance sleep and improve overall well-being.

Part I: What Is Glycine?

Glycine is a non-essential amino acid, which means our bodies can typically produce it from other compounds. However, it’s also present in various foods and available as a dietary supplement. As the smallest and simplest amino acid, glycine is fundamental to maintaining healthy function in the body. It plays several crucial roles, from protein synthesis and neurotransmission to the digestion and the production of glutathione, a powerful antioxidant. One of its most intriguing benefits, however, is its ability to improve sleep quality.

Part II: Glycine and Sleep Quality

How exactly does glycine influence sleep? Research suggests that glycine may promote sleep by lowering body temperature. A slight drop in our core body temperature is a signal to our body’s internal clock that it’s time to sleep. Glycine enhances this process, helping us to fall asleep more quickly and improving overall sleep quality.

Moreover, glycine is an inhibitory neurotransmitter in the nervous system, which means it helps calm brain activity. This could help individuals relax and fall asleep more easily. Furthermore, it also appears to improve the quality of sleep by increasing the efficiency of our deep, restorative stages of sleep, known as slow-wave sleep.

Part III: The Extended Benefits of Glycine

While glycine’s sleep-promoting properties are impressive, its benefits extend beyond improving our nighttime rest. Studies suggest that glycine can also enhance daytime performance. People who take glycine before bedtime have been reported to feel more refreshed and less fatigued during the day. They also perform better on memory recall tasks, suggesting that glycine may enhance cognitive function by improving sleep quality.

Part IV: How to Incorporate Glycine into Your Diet

While our bodies produce glycine, dietary intake can also contribute to our glycine levels. Foods rich in this amino acid include protein-rich foods such as meat, fish, dairy, and legumes. For those struggling with sleep issues, a glycine supplement could be a beneficial addition to your bedtime routine, as supplemental glycine is typically in a form that’s easily absorbed and used by the body.


Sleep is a cornerstone of good health, and optimizing it can pay dividends for our overall well-being. Glycine, an under-the-radar amino acid, has emerged as a promising natural remedy for enhancing sleep quality and reducing daytime fatigue. Whether through dietary changes or supplementation, incorporating more glycine into your routine could be your ticket to achieving the restful night’s sleep you deserve.