Until recently, the soy was only known in Asian cuisines, mostly because its fermented products rich in protein supplement their diet based on rice. But thanks to the relatively inexpensive out- put quality and composition (the richest plant with protein), soy spread worldwide, and its products have found their way into many tales worldwide.
Besides the already mentioned protein, soy contains many beneficial omega-3 acids and the whole range of other beneficial plant substances (called phytonutrients). Proclamation of soybeans for valuable food commodity with anticancer properties and elements that reduce harmful LDL cholesterol is mostly based on certain segments of numerous health studies, but part of the propaganda of the strong industry producing soybeans. But what this propaganda usually omits to mention is the fact that soy and its products contain a number of substances for man not only negative, but even dangerous, and can cause serious damage to health.
Mostly, the soy products are consumed by vegetarians (due to decreased intake of protein in their diet), but the number of people who often use is not limited to them.
Disadvantageous of soy seeds ingredients are:
- Uric acid;
- Inhibitors of enzymes in the digestive;
- Genetically modified types of soya;
- Herbicides and pesticides applied in the production of soya;
The seeds of soybeans contain potent inhibitors of certain enzymes, such as trypsin, which is necessary for the digestion of proteins. Normal cooking or preparing of soy does not deactivate these anti-nutrients that can cause serious stomach problems, may decrease the breakdown of proteins and to bring the body to a state of chronic lack of amino acids. Hemagglutinin is an ingredient in soybean seeds that blood aggravates matters that agglutinate red blood cells, which prevents proper absorption of oxygen and its distribution among the cells in the body.
However, the most controversial components of soy seeds are some Isoflavones as genistein and daidzein. Genistein is known as an inhibitor of tyrosine kinase, an enzyme important in the utilization of essential amino acids in the brain, and whose influence is extremely important for the proper functioning of the thyroid hormones and many other functions that are in the body. Influence of Isoflavones to reduce the functionality of the thyroid to cause hypothyroidism development. Because the function of this gland is extremely important for the brain development of children from an early age, especially in the first 12 weeks of pregnancy, excessive consumption of soy and soy products during pregnancy can damage the developing brain of the child and disorders of organs for reproduction.
Some studies have shown that children who are consuming two cups of soy milk per day, comes to a significant increase of Isoflavones (phytoestrogens) in the blood (13,000 to 22,000 times the natural concentration of oestrogen at that age). Although the actions of phyto-oestrogen are 1,000 times weaker than the effect of tarragon, however such amounts are extremely high. Studies also show that phytoestrogens in adults cause dementia. It has been proven that men, who consume tofu at least twice a week during 30 years, have irreversible damage and reduction in brain volume corresponding to an older age.