It depends on what you mean by absorb. To make into muscle, it’s about right. Maybe a bit more for a man on a hard weight lifting regime. Like, 4 x 1-1.5 hours a week. The rest will be stored as fat, if it isn’t used for energy, the same as anything else. That could also be seen as absorbed but I think you mean the first one.

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100%. For example right now the meat and dairy lobby groups are pushing hard for everyone to eat for more protein than they need. Now, I have people who can’t tell the difference between a cytokine and a histone without using Google, even if it slapped them round the face, telling me they need 100g plus a day in Brotien. Its just a coincidence that this so called health advice makes those groups a lot more money.