This quote, "The National Institute on Aging is now sponsoring a controlled trial to test whether exercise can prevent disability in largely sedentary people, age 70 to 89. There is also some early evidence that nutrition, like vitamin D or high levels of protein, might help. “At this point, what we can say is that older people are at risk for eating too little protein for adequate muscle preservation,” said Dr. Elena Volpi of the University of Texas Medical Branch in Galveston." is like reading parts of my book, The New Evolution Diet, or my Essay on Evolutionary Fitness back to me.
I have to say that I have lost little or no muscle mass and only a bit of strength, primarily because I do not train for strength as much as I used to. OK with me; it suits me and I can always regain most or all of my old strength anytime I want to. So can you.
Muscle is medicine. Strength carries us effortlessly through life.