One gram of protein per pound of body weight (2.2 grams per kilogram of body weight) per day has been a bodybuilding rule of thumb for decades. • Higher levels of protein intake, usually in the range of 1.2 to 1.5 grams per pound of body weight (2.6 to 3.3 grams per kilogram of body weight) per day, are commonly recommended when dieting to lose fat.
