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As Dr. Mercola has reported, the methionine/glycine ratio is essential. Inflammation is a common factor in cancer, cardiovascular, metabolic and neurodegenerative diseases, as well as other inflammatory diseases. Glycine administration modulates dietary amino acid levels especially methionine, which may increase healthy lifespan and provide a basis for further investigation of the effects of diet on aging and diseases of old age.

Glycine can send a "slow down" signal to the brain, likely contributing to major depression, anxiety and other mood disorders in some people, scientists at the UF Scripps Wertheim Institute for Biomedical Innovation and Technology found.

Glycine acts as a precursor to several key metabolites such as creatine, glutathione, heme, purines and porphyrins. Dietary supplementation of adequate doses of glycine is effective in the treatment of metabolic disorders in patients with cardiovascular, metabolic, neurodegenerative and inflammatory diseases and cancer. Glycine also has the property of improving sleep quality and neurological functions.

Plasma levels of glycine in human populations, although may be adequate for the biochemical functions of glycine, including protein synthesis, may not be sufficient for the cellular physiological function of glycine in membrane voltage stabilization, cell activation .

Glycine comprises one-third of the molar fraction of collagen, and it is postulated that such chronic diseases have been on the rise because the consumption of glycine-rich bones and connective tissues has decreased in recent decades.

Observational studies, a clinical trial in Mexico City a decade ago reported the reversal of type 2 diabetes with the consumption of 15 g/day of supplemental glycine for 90 days. Glycine decreases proinflammatory cytokines and increases interferon-γ in patients with type 2 diabetes.

Type 2 diabetes (T2D) and Alzheimer's disease (AD) are two global epidemics that share several metabolic defects, such as insulin resistance, altered glucose metabolism, and mitochondrial defects. Importantly, strong evidence demonstrates that type 2 diabetes significantly increases the risk of cognitive decline and dementia, particularly AD.

The accumulation of damaged mitochondria in diabetes is responsible for increased levels of oxidative stress and inadequate energy production, resulting in decreased neurotransmission and ultimately cognitive impairment. Glycine has previously unrecognized neurotherapeutic effects. In this study, we examined the mechanism underlying the neuroprotective effect of glycine (gly) against neuroapoptosis, neuroinflammation, synaptic dysfunction, and memory impairment resulting from elevation of reactive oxygen species. A study reports that Gly is a safe and promising neurotherapeutic candidate that could be used for age-related neurodegenerative diseases. Another study reports that DHA significantly reduced Aβ deposition in the brain and inhibited nerve fiber production and glycine levels, inhibiting cognitive decline in Alzheimer's

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