> safe to discount any study that indicates significant health effects from a nonessential amino acid
One, that’s too much confidence for a topic we do not understand well. Two, the study found—with startlingly high confidence and a meaningful, if small, effect size—glycine “can mitigate methionine toxicity,” the latter being an essential amino acid [1].
Well the research is on rats. not to mention that the glycine specific one is funded by a glycine selling company. But despite all that, glycine has strong research backing it especially for reducing inflammation and allergies.
One, that’s too much confidence for a topic we do not understand well. Two, the study found—with startlingly high confidence and a meaningful, if small, effect size—glycine “can mitigate methionine toxicity,” the latter being an essential amino acid [1].
[1] https://pubmed.ncbi.nlm.nih.gov/30916479/