If you're looking for a low-calorie alternative to the same old poultry dish, pork tenderloin is your answer. Pork tenderloin is naturally very lean and works in a multitude of recipes, blending with any flavor imaginable. You'll get plenty of protein from this cut of meat, without adding a slew of calories to your meal.
Four ounces of cooked pork tenderloin provides around 165 calories -- give or take a few calories. Pork tenderloin is incredibly low in fat, containing between 4 and 4.5 grams of fat per 4-ounce serving. Because fats give you 9 calories in a gram, just 36 to 41 of the total calories come from fat. Pork tenderloin doesn't provide carbohydrates, so the remaining calories come from protein. That 4-ounce broiled tenderloin has around 30 grams of protein, or roughly 120 calories from protein, since protein has 4 calories per gram.