Some foods that are very high in protein include eggs, almonds, chicken breast and cottage cheese. Other high-protein foods include Greek yogurt, lean beef and tuna.
Egg whites are almost pure protein. A single egg contains 6 grams of protein and only 78 calories. Almonds, a popular tree nut, contain 6 grams of protein in a 1-ounce serving, and they are also a great source of important nutrients like fiber and magnesium. When chicken breast is eaten without the skin, the majority of its calories come from protein; the average roasted chicken breast contains 53 grams of protein and only 284 calories.
Cottage cheese is a healthy choice since it tends to be low in fat and calories. A single one-cup serving contains 27 grams of protein and 194 calories. It's also a good source of calcium and selenium. Non-fat Greek yogurt contains 17 grams of protein and only 100 calories per cup.
Lean beef is another great source of protein, with one three-ounce serving containing 22 grams of protein as well as important iron, vitamin B12 and other nutrients. Tuna canned in water contains 39 grams of protein and only 179 calories in a serving, and it's also a good source of omega-3 fatty acids.