What kinds of proteins are consumed by vegans?

Answer 1

Vegans do not have any protein from animals (including fish), diary (including things like whey, casein, etc...), eggs, and whatever else you can think of that has protein that involves using an animal.

Answer 2

Protein molecules are composed of amino acids, which contain nitrogen and sometimes sulphur.

Your body can synthesize most of the 21 amino acids that you need to make protein, with the exception of nine essential amino acids (histadine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine) that must come from your food.

One very important distinction between animal and plant-derived protein is that animal proteins contain very large amounts of the basic element sulfur. This sulfur is found in two of the amino acids, methionine and cysteine. Your body makes other sulfur-containing amino acids from these two primary sulfur-containing amino acids, including keto-methionine, cystine, homocysteine, cystathionine, taurine, and cysteic acid.

Meat, dairy, and eggs provide an excess of these sulfur-containing amino acids beyond your needs, which places a burden on your body and detracts from your health. Protein in the vegan diet therefore protects your health in several ways:

• Vegetables are alkaline. They neutralize acid and prevent osteoporosis and kidney stones. Amino acids, as the name implies, are acids. The sulfur-containing amino acids, which are abundant in meat, dairy, and eggs, are the strongest acids of all, because they break down into powerful sulfuric acid. This acid must be neutralized by your body. Calcium and other minerals are released from your bones to neutralize the acids, leading to osteoporosis and kidney stones.
• The protein in vegetables lowers the levels of homocysteine in your blood, which reduces your risk for heart attack, stroke, vascular disease and blood clots in your legs, cognitive impairment, dementia, Alzheimer's disease, and depression. Your body metabolizes the abundant methionine from meat into homocysteine. The more meat in your diet, the higher your blood level of homocysteine, and the higher your risk for all those diseases.
• The lower amount of sulfur in the amino acid profile in vegan diets lowers your risk of cancer. Sulfur feeds cancerous tumors. Normal cells can grow without high levels of methionine in your diet, whereas cancer cells, especially those that cause breast, lung, colon, kidney, skin, and brain cancers, depend on high levels of methionine being in your diet in the form of meat and dairy products. Meat and dairy products also raise the levels of a powerful growth stimulating hormone, called insulin-like growth factor - 1 (IGF-1), which promotes the growth of cancers of the breast, colon, prostate, and lung.
• Protein from plants protects your intestines and helps prevent a life-threatening inflammatory bowel disease called ulcerative colitis. Sulfur from diet of high-methionine (animal) foods is toxic to the tissues of your intestines, even at low levels.
• Vegetable protein prolongs life by changing the fundamental rate at which aging occurs. Restriction of methionine in their diet has prolonged the life of animals. A diet based on plant foods is inherently lower in both calories and methionine than a diet dependent on meat, dairy, and eggs, and is the easiest and most effective way to live a long and healthy life.
• Vegetable protein makes you smell better. Methionine-rich animal protein creates foul-smelling odors. Bad breath, body odor, and flatulence that smells of rotten eggs are a direct results of the sulfur (animal protein) you eat.

Nearly all vegetables, beans, grains, nuts, and seeds contain some, and often plenty, of protein with varying amino acid profiles. Vegans who eat varied diets containing vegetables, beans, grains, nuts, and seeds rarely have any difficulty getting enough protein as long as their diet contains enough calories to maintain their weight. All the essential and nonessential amino acids are present in these foods in amounts that meet or exceed your needs, and in a ratio that is kind to your body.