Portion control plays a central role in managing your daily calories, and beef portions are no exception. The American Heart Association recommends consuming no more than 6 ounces of lean meat, fish or poultry per day. Lean beef is rich in high quality protein and contains essential nutrients, such as iron, zinc and B vitamins. In the right amounts, lean beef can fit into a healthy diet without the worry of adding excess calories.
When it comes to cuts of beef, the loin is lower in fat and calories than some other cuts. The T-bone steak is a tender cut taken from the short loin in the rear of the cattle. While the idea of having a big juicy piece of steak may seem tantalizing, it's better to control your portions. A good serving size for beef is 3 ounces, which is about the size of a deck or cards. A 3-ounce serving of T-bone steak with all of the fat trimmed off contains 210 calories, 5 grams of saturated fat and 6 grams of unsaturated fat. Trim any visible fat from your steak and choose cooking methods such as grilling, which don't require adding oil.