This actually may not be good advice, because methionine restriction has been found to mimic caloric restriction in extending lifespan, and also inhibits cancer

This actually may not be good advice, because methionine restriction has been found to mimic caloric restriction in extending lifespan, and also inhibits cancer cell growth. See: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5008916/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5008916/ and https://pubmed.ncbi.nlm.nih.gov/32138282/ https://pubmed.ncbi.nlm.nih.gov/32138282/ for example.