GlyNAC
Has anyone tried Glycine/N-acetylcysteine? It appears to have amazing effects on age reversal.
Glycine and N‐acetylcysteine (GlyNAC) supplementation in older adults improves glutathione deficiency, oxidative stress, mitochondrial dysfunction, inflammation, insulin resistance, endothelial dysfunction, genotoxicity, muscle strength, and cognition: Results of a pilot clinical trial
https://onlinelibrary.wiley.com/doi/epdf/10.1002/ctm2.372
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Although small trials, those two studies on the effects of glycine and NAC are about the most astounding I have seen for anti-aging effects.
The doses, 7 and 9 g per day, are high, but as I understand it only enough to restore Glutathione to youthful levels. No side effects reported during the trials.
Could any fairly long-term user of glycine + NAC report?
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I am in my 60's and have completed 31 weeks of NAC and glycine daily at the levels set out in the study. I have experienced nowhere near the results set out in that study. I may have experienced a small amount of increased ability in my half hour runs. I have strength trained regularly for quite a few years and if there were any gains in strength I would know it. There have not been gains in strength.
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I've been taking glycine (4000mg), serine (900mg) and NAC (1200mg) daily for about six months. I'm 50 so the lower dose is intended as a top-up that I might scale as I get older.
Only thing I noticed is if going out for a drink with friends the next day tends to be much easier, almost like those youthful days. No liver inflammation, no headache. Interpret this as having more glutathione in the liver to mop up aldehydes and other by-products.
Don't know what to think about the topic as anti-oxidants are clearly important, but then non chronic stressors are good for the body by stimulating repair, does this supplementation risk having too few stressors? Difficult to know where the balance ideally is.
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Can anyone comment on this article which argues nac shortens life span? https://www.nature.com/articles/s41467-021-24634-3
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I also note this: "Quite intriguingly recent preclinical studies confirmed the pro-tumorigenic and pro-metastatic effects of antioxidant supplementation such as N-acetyl-L-cysteine (NAC), a GSH precursor [155, 156], thus highlighting the relevance of antioxidants in the protection of cancer cells against oxidative damage. Therefore, antioxidant supplementation can promote the growth of tumors by rescuing the viability of cells under high oxidative stress." https://clintransmed.springeropen.com/articles/10.1186/s40169-016-0106-5 which cites https://www.science.org/doi/10.1126/scitranslmed.3007653 and https://www.science.org/doi/abs/10.1126/scitranslmed.aad3740
Thoughts?