That matches what I’ve read. I try for ~100 grams/day. I’m 71 and after a recent attack of pancreatitis, I had to give up milk (just couldn’t digest it any more) and found a vegetable (pea) protein shake that is quite tasty and provides about 32 grams/bottle.
I also switched from mostly beef to chicken and pork because of the same digestion problems. The results have been excellent. I’ve put on muscle and my energy level soared.
There was an informative article in the Costco magazine some months back. The guy who invented it was near death and couldn’t find a healthy protein drink, so he formulated his own. When he recovered he helped others and eventually started a business.
Glad your protein source switch to non-beef is working for you. We’ve recently switched to grass-fed hamburger. We’re working through inventories of commercial chicken and pork, since according to Dr. Mercola their diet is high in Linoleic Acid (omega-6), which is detrimental in excess. I remember about about ten years ago we got a free organic chicken from Whole Foods and it just tasted “right” but it was small. I suppose we should try that again.