Soy is definitely one of the most controversial foods in the world.
In different sources you can find information on the indispensability and value of soy and its harmful qualities. How things really are.
What is soy and where is it used?
The soybean is a plant of the legume family, which in large quantities are grown in East Asia. Soybeans can be eaten only in raw they are poisonous.
Soy is used for making tofu, soy milk and various dairy products, meat substitutes, etc.
In Western countries, soy is more often used not in the form of whole beans, but in the form derived from soy products.
Due to its properties and low cost, soybean oil and soy protein is used for the manufacture of many food products. You may not even know that your diet is also present soy.
Soy protein also is the main ingredient for the production of soy infant formula.
The nutrients in soy
Whole soy beans contain a number of important nutrients. 100 grams of boiled soybeans contains large amounts of manganese, selenium, copper, potassium, phosphorus, magnesium, iron, calcium, vitamin B6, folic acid, Riboflavin (B2), thiamin (B1) and vitamin K.
In such a serving contains 173 calories, 9 g fat, 10 g carbs and 17 g protein.
You need to understand that soybeans also contain phytates – substances that bind minerals and reduce their absorption.
Soybeans – a good source of protein. However, heat treatment can denature some proteins and reduce their quality.
In soybeans also contains polyunsaturated fats omega-6 that can lead to health problems when their excessive use.
It is for this reason, you should avoid soybean oil and other vegetable oils high in omega-6.
Keep in mind that the nutritional composition of soybean depends significantly on the type of soy products. Whole soybeans can be useful nutrient, while foods made from soybean such as soy protein or soybean oil non-nutritive at all.
The benefits of soy
There is some evidence that soya is good for health. Studies have shown that soy protein can lower cholesterol levels, while other soy products do not have cholesterol.
It is important to remember that even if soy lowers cholesterol, there is no guarantee that it will protect you from cardiovascular disease.
Some studies have shown that soy may reduce the risk of prostate cancer in men.
Harmful properties of soybeans
Soy contains a large number of biologically active compounds – isoflavones that act as phytoestrogens. Isoflavones can disrupt the normal functioning of the hormones in the body.
Due to estrogenic activity, isoflavones are often used as natural alternatives to estrogen drugs to relieve symptoms of menopause.
Studies conducted on animals show that isoflavones can also cause breast cancer. And while many experts believe that the isoflavones on the contrary, can reduce the risk of developing breast cancer, a study conducted on animals, instills doubt about it.
Also studies have been conducted on people who have shown that soy can cause menstrual irregularities.
Soy can have an effect on males. A study conducted with 100 men suffering from infertility, showed that those who consumed a large amount of soybeans within the last three months had the lowest sperm activity.
Daily consumption of soy can cause an increase in the level of thyroid-stimulating hormone and lead to hypothyroidism, symptoms of which are malaise, constipation, sleepiness and enlargement of the thyroid gland.
Soy formula can have a detrimental effect on the health of children. Studies have shown that those children who were fed soy formula, increases the risk of early puberty. Soy can also contribute to the development of the syndrome of attention deficit and hyperactivity disorder and other neurological problems because of the high content of manganese.
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