“Protein in Top Sirloin
Eight ounces of broiled, top sirloin steak with the excess fat trimmed off contains about 69 grams of protein. The Institute of Medicine reports that protein RDAs, which are minimum protein requirements, are 56 grams for men, 46 grams for women and 71 grams of protein daily during pregnancy and lactation. Top sirloin steak is also an excellent source of iron, zinc and vitamin B-12.
Although you can exceed your daily protein needs by eating an 8-ounce portion of top sirloin, it’s generally best to eat smaller portions of protein-rich foods throughout the day instead of all in one meal. A review published in a 2011 edition of the “Journal of Sports Sciences” reports that spreading out protein intake among three to four meals each day can help maximize muscle synthesis in athletes. In addition, your body can only use up to 1 gram of protein per pound of body weight per day, according to Brown University, and your body excretes excess protein.”