Animals are used as food either directly or indirectly. This includes meat, eggs, shellfish and dairy products like milk and cheese.[59] They are an important source or protein and are considered complete proteins for human consumption as they contain all the essential amino acids that the human body needs.[60] One 4-ounce (110 g) steak, chicken breast or pork chop contains about 30 grams of protein. One large egg has 7 grams of protein, a 4-ounce (110 g) serving of cheese about 15 grams and 1 cup of milk about 8.[60] Other nutrients found in animal products include calories, fat, essential vitamins (including B12) and minerals (including zinc, iron, calcium, magnesium).
