This is not really a good idea, especially if they are getting enough protein in their diets already (about 0.8g per kg of bodyweight) which most people have no

This is not really a good idea, especially if they are getting enough protein in their diets already (about 0.8g per kg of bodyweight) which most people have no problem getting. Eating too much protein-rich food increases the risk of excessive uric acid build-up and can lead to all sorts of fun problems like gout and kidney stress. Despite what fad diets say, carbs are not bad for you. You will gain weight if you eat too many carbs, but that is the same for too much fat or too much protein.