Some thoughts
The protein requirements of athletes, once the source of great controversy, has settled into a current consensus. Sedentary people and recreational athletes have similar protein requirements, about .8 to 1 gram of protein per kilogram of body mass. These needs are easily met by a balanced diet containing about 56 grams of protein for a 70 kg (150 pound) man or 46 grams of protein for a 60 kg (130 pound )woman. There is a large spectrum ranging from malnutrition to optimal health, which includes many common symptoms and diseases which can often be prevented or alleviated with better nutrition.
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