It appears that you have lost your enthusiasm for the very low use of protein while aging. I recall articles you produced that suggested as we grow older protein is no longer needed as it was when we were young and still growing muscles and bone structure. In fact that too much protein while aging had a deleterious impact on aging.
Steve, that's true, I remember that, although I don't remember exactly the articles. Maybe I cited the 2014 article in the very authoritative Cell magazine by Morgan Levine (I call her the Barbie doll with a giant brain) and Valter Longo, a renowned longevity expert (of Italian origins like Luigi Fontana). It underlined the fact that until a certain age it's best to eat a moderate amount of protein, whereas after a certain age (65 years according to the study) it's best to increase protein to avoid sarcopenia or frailty. This same study told that eating meat is very bad for longevity and health. The title is maybe misleading because it says 'low protein' but in reality it should read 'proper amount of protein'.
Presently, in consideration of the very differing views existing on this subject, I use some criteria to navigate. In a few words, I try to use God-given power of logic and discrimination.
What are the opinions of the great masters on the subject? They suggested moderation in eating, a plant-based diet but with the presence of animal protein, like fresh dairy products (sattvic food like SY writes in his book) and eggs. The lacto-ovo vegetarian diet of SRF monks and nuns. Yogananda supported a 'proprietarian diet'. The proper variety and the proper amount of vegetarian food.
All in moderation. So, protein should be eaten in moderation, which means it should be in the right amount, not too much but not too little. Exercise, a very good ingredient for longevity, increases the demand for protein.
If you are curious, this is the article on cell metabolism. It is a milestone, highly praised by the vegans, highly criticized by the paleo and lowcarb guys.
Low Protein Intake Is Associated with a Major Reduction in IGF-1, Cancer, and Overall Mortality in the 65 and Younger but Not Older Populationhttps://www.cell.com/fulltext/S1550-4131(14)00062-X
