I'm a vegetarian (and much of the time also a vegan) and since I've read that most of us already get plenty of protein I haven't paid much attention to this, other than a teaspoon or so of protein powder twice a day. With this new info I'm wondering if it's worth figuring out how much I take in, then decide based on that whether I should increase (or decrease) my intake.
The researchers also looked for the sweet spot for protein intake, which turned out to be about 1.6 grams of protein per kilogram of body weight per day. In practical terms, that would amount to about 130 grams of protein a day for a 175-pound man. (A chicken breast has about 45 grams of protein.)
Beyond that point, more protein did not result in more muscle benefits.
That number is considerably higher, however, than the protein levels called for in the current federal recommendations, which suggest about 56 grams of protein a day for men and 46 grams a day for women.