Bonnie Jortberg, an associate professor in family medicine and registered dietician at the University of Colorado School of Medicine, previously told Newsweek: "Most adults need approximately 0.75 grams of protein per kg of body weight per day. "For most men, this is about 55 grams per day and for women 45 grams per day. For athletes, it is recommended to increase protein to 1.0 grams per kg body weight. [But] it is a myth that eating lots more protein will gain muscle."