You have to know what you're doing. It's the same way with calcium, they can't exclude dairy products. Vegetarians who are well-informed of the deficiencies in their diets know to increase the intake of amino acids to support good nutritional health. Amino acids are the building blocks of protein, the nutrient supplied in great amounts in meat, fish, poultry, eggs, milk and cheese. Vegetarians usually avoid excessive amounts of most products containing substantial amounts of protein.
Vegetarianism also holds many benefits to a healthier lifestyle.
Vegetarians experience a much lower intake of saturated fatty acids. The majority of consumed saturated fat comes from animal products. Some vegetarians consume dairy and eggs, but overall, their diets usually are lower in saturated fat consumption. A vegetarian diet also usually contains a higher intake of dietary fiber. A diet high in dietary fiber helps lower the probability of developing colon cancer.