The girl does not eat meat, eat eggs and drink milk nutrition can keep up with it?

The American Dietetic Association (ADA) states (1997), " If a vegetarian diet is varied and meets energy needs, then protein from plant sources alone can provide enough amino acids. Studies have concluded that for healthy people, protein supplementation is not needed while eating a vegetarian diet. Amino acids from a variety of sources consumed throughout the day will ensure that there is enough nitrogen in the body for conservation and use." Simply put, with adequate and varied food, as long as you eat enough, then, even without eating meat, you can get enough protein and often more than your body needs.In 1972, Dr. Frederick F. Stare of Harvard University conducted a comprehensive study of vegetarians in the United States. The subjects included adult men and women, pregnant women and male and female adolescents. It was found that the daily protein intake of all was more than twice the minimum necessary amount. From this, we can conclude that eating a varied vegetarian diet can easily ensure the body's protein requirements.

Next, let's take another look at the nutritional value of vegetarian proteins. The main function of proteins is to form human tissues and synthesize various enzymes, hormones and antibodies. The basic elements that make up protein are amino acids, of which there are about 20 types***. In these 20 kinds of amino acids, only 9 of them are not synthesized by the human body itself, and need to be ingested from food, called essential amino acids, while the other amino acids can be synthesized by the human body itself. In this way, whether the protein in food contains these 9 essential amino acids or not is the key to the problem, while whether the other amino acids are there or not is not a big problem. Therefore, if the protein in a certain food fully contains these 9 essential amino acids, it is called "complete protein", otherwise it is "incomplete protein". Meat proteins and milk proteins were once considered to have some kind of advantage, mainly because they were complete proteins. But animal proteins are not the only complete proteins; soy is also a complete protein.

It is worth noting that complete proteins can easily be obtained from combinations of two or more vegetarian diets, due to a certain complementarity of amino acids in various food proteins. In other words, an amino acid that is deficient in one food protein may be "in excess" in another, so that the nutritional value of the protein obtained from the combination of two foods is much higher than that obtained from one of them (see the table below), as in the case of the combination of cereals and legumes. People around the world seem to have instinctively recognized this, for example, in the Chinese traditionally eat rice, noodles and soy products, Indians eat rice and beans, and people in Central and South America eat corn and beans.