Glycine plays a crucial role in stimulating the production of collagen, an essential protein naturally present in the human body. With advancing age, collagen production declines, leading to a loss of skin firmness and elasticity. By promoting collagen synthesis, glycine helps restore skin firmness and stimulate skin tissue regeneration. This makes it a valuable ally in the fight against the signs of aging, such as age spots, by improving overall skin quality.

Glycine has a positive effect on antioxidant enzymes, which helps slow down cellular aging. Among the body's essential antioxidant defenses against free radical damage, glutathione is particularly powerful. It is composed of three amino acids: glycine, cysteine, and glutamic acid.

Recent research has shown that when glycine is insufficient, glutathione production decreases. Since glycine levels tend to naturally decline with age and in certain pathological conditions, maintaining adequate levels is crucial to preserve cellular and overall health.

Glycine plays a vital role as an inhibitory neurotransmitter in the spinal cord.

It plays a role in the metabolism of creatine,
glycine therefore participates in muscle recovery.

Glycine supplementation has been shown to be effective in the treatment of several diseases, including cardiovascular and respiratory diseases of inflammatory origin. Its beneficial action on inflammation and its role in modulating metabolism make it a potentially useful agent in the management and treatment of these pathological conditions.

Glycine plays a crucial role in various pathological conditions such as obesity, diabetes, and hypertension, where its levels are often low. By helping the body better regulate sugar intake, glycine contributes to maintaining a balanced metabolism. Furthermore, it appears capable of correcting metabolic imbalances when they occur.

Glycine has a detoxifying action on the
liver since it participates in the synthesis of bile acids.

Glycine also exerts a beneficial influence on the brain by acting as a calming neurotransmitter that promotes sleep. It helps regulate the ratio between time spent in bed and time actually spent asleep. Studies have shown that glycine can reduce the time it takes to fall asleep, decrease daytime sleepiness, and improve performance on memory tests.

By acting on inhibitory receptors in the brain, particularly NMDA receptors, glycine has calming effects that promote better sleep. This property makes it a potentially useful supplement for improving sleep quality and treating certain sleep-related disorders, although more research is needed to confirm its effectiveness in these areas.

Glycine is a major component of collagen, an essential structural protein found abundantly in skin, bones, tendons, and cartilage. Collagen is responsible for the firmness, strength, and elasticity of these tissues.

Effects on Skin: A study led by Jong Il Park of Kyung Hee University explored the effects of glycine combined with leucine on skin cells. They discovered that this duo promotes the production of hyaluronic acid by keratinocytes, a crucial component for skin hydration. Additionally, glycine and leucine have been shown to reduce the activity of elastase, an enzyme that breaks down elastin, another protein important for skin suppleness and elasticity. By reducing this activity, these amino acids may help maintain youthful, vibrant skin by limiting the effects of aging and inflammation.

Anti-aging and longevity effects: Glycine may play a broader role in promoting longevity by counteracting the potentially toxic effects of other amino acids like methionine. This ability may help increase lifespan by minimizing the effects of oxidative stress and promoting optimal metabolic balance.