@cdlara381 As a vegan for over 30 years (who has been more fit, less fit, more muscly, less muscly, weighed more, weighed less in 30+ years) the only protein supplements I knowingly eat are cliff bars some days - 7 to 10 grams of protein per bar.
I am 55 years old, in good health, do not take any regular medications or supplements aside from a vegan multi a few days a week to ensure I don't go too low on vitamin D or B12 or whatever. While I do pay some attention to the foods I eat, making sure they're a mix of whole grains, legumes, fresh fruits and veggies, sometimes quinoa - I have no idea how many grams of protein I eat a day. After being vegan over 30 years, still being in good health (and looking decent at 55) I seem to get enough protein.
What I think I know about protein comes mostly on the protein content of milk. When we are babies, we are growing the most new body in our lives. Even more new body than competitive body builders. When our bodies are growing the fastest, biology serves humans a food that has 6-7% protein as a % of calories. That is all. Says to me eating more protein than that is useless because our fully grown bodies will not use all that extra protein and we will just make our kidneys work extra hard filtering it out of our blood, if we even digest it at all.
Cows grow faster than humans and cow milk is around 21% protein. About 3 times more than human milk. 3 times more than humans need when we are growing the fastest. I hear rat milk is around 50% protein. Rats grow MUCH faster than cows or humans, so their milk is loaded with protein.
You're not a cow or a rat. Biology gives you a food that is 6-7% protein as a % of calories when you were growing the fastest. Eating more than that does not do anything other than enrich the companies who make protein powders and make your kidneys work extra hard. Did you know broccoli is 35% protein (as a % of calories)?
Who woulda thunk?