The Efficacy Of Soy Protein

The effect of soy protein in reducing cholesterol is caused by a combination of many individual factors or related factors. These contributing factors and their effects mainly include:

1. Soy glutinin Soy protein can reduce the level of low-density lipoprotein cholesterol, which is beneficial to the prevention and treatment of cardiovascular diseases. Studies have shown that glycinin can stimulate high-affinity low-density lipoprotein cholesterol receptors in human liver cell culture agents, and can significantly reduce their blood cholesterol levels.

2. Amino Acids Certain amino acids, mainly lysine, increase blood cholesterol levels, while arginine has an adverse effect. Therefore, the ratio of lysine to arginine in the diet is a key factor affecting the cholesterol content and the resulting atherosclerosis. The ratio of lysine to arginine contained in soy protein is significantly higher than that of animal protein. Knowing that L-arginine is the precursor of the skin-derived relaxing factor, it is generally believed that the relaxing factor, nitric oxide (N0), not only has a strong vasodilator effect, but also inhibits platelet adhesion and aggregation and resists monocyte adhesion chemotaxis. , Anti-proliferation of vascular smooth muscle cells, all of which play a very important role in the formation of atherosclerosis.

3. Promote the excretion of bile acids. Soy protein releases a peptide that binds to bile acids during digestion, thereby excreting bile acids from the feces. Since bile acids are composed of cholesterol, this effect can also reduce Cholesterol is excreted from the body, as the cholesterol is converted into bile acid, it also activates the activity of low-density lipoprotein cholesterol, so it can achieve the effect of reducing the cholesterol level in the blood.

4. Animal experiments that affect cholesterol metabolism in the liver have found that soy protein can significantly reduce blood total cholesterol and low-density lipoprotein cholesterol levels, and increase the reducibility of p-hydroxy-p-methylglutarylase A (HMGCoA), while HMGCoA Reductase catalyzes and controls cholesterol biosynthesis, thereby promoting the removal of low-density lipoprotein cholesterol and very low-density protein cholesterol.

Soybeans (also known as soybeans), because they are rich in protein, have always been the main source of protein for vegetarians. The reason why more and more attention is being paid at present is that besides soy milk can lower cholesterol, it is beneficial to fight cancer. We can explain it from the point of view of nutrition. Soy protein is rich in isoflavones. Isoflavones are hormone-like compounds that can inhibit the growth of tumor cells caused by hormonal imbalance.

  In addition, the genistein contained in soybeans can inhibit the enzymes that cause cell growth and inhibit the proliferation of abnormal blood vessels (the latter point is the same as the anti-cancer mechanism of shark cartilage). Another point is fiber. Adequate intake of fiber helps to excrete excess fat and indirectly reduces the chance of breast cancer caused by excessive fat intake. It just so happens that soybeans are rich in fiber, so it is beneficial to inhibit the occurrence of breast cancer. Therefore, it is recommended that middle-aged people over the age of 40 should pay more attention to supplementing soy protein to ensure good health.