In the twentieth century, soybeans was one of the two main new crops introduced in the US (The other being canola crops). Now it has become the main export crop and one of the second largest cash crop sales. Most products are processed soybean oil (butter, margarine, cooking oil, salad dressings) and food.
For example, you may have noticed (or may begin to notice) the popular ingredient “soy lecithin” in many of its food and household items. There was a time when soya was praised a super food, from the fight against cancer and high cholesterol. However, new evidence has emerged with the negative impact of soy on health (and the environment). Read on to discover the deceptions and dangers of soy.
The health hazards of soybean
1. immune system disorders – Soy contains chemicals that cause endocrine disruption called phytoestrogens (particularly genistein and daidzein). They influence the reproductive organs and the immune system. In a study that found that mice treated with genistein (soy isoflavone) was less than gamma interferon (IFN) in culture supernatants compared to mice treated with oil. Interferon-gamma is a cytokine that is crucial in innate and adaptive immunity against viral and bacterial infections and tumor control. Decreased levels of this molecule mediates decreased immunity and decreased tumor control.
2. Impairment of Fertility – Soy isoflavones as seen in point 1 (above), are structurally similar to endogenous estrogens and show both anti-estrogenic activities estrogenic and weak. fertility disorders and reproductive tract disorders may be the result of such activities. In females exposed to high doses of isoflavones rats decreased fertility and altered estrous cycle – but also led to an increase in uterine weight and height of epithelial cells that may contribute to ovarian cysts. Studies of male rats were not found on the sexual maturity, removal of the foreskin, fertility, sperm count or testosterone effects.
3. Thyroid disorders – soy-containing foods and isoflavones may adversely affect thyroid function. In a study that investigated whether breast-feeding and formula containing soy in infants were associated with the development of autoimmune thyroid disease in children.
“There were no differences in the frequency and duration of breastfeeding in early life among the three groups of children. However, the frequency of feedings with soy milk formulas in early life was significantly higher in children with autoimmune thyroid disease (prevalence 31%) compared with siblings (prevalence 12%; chi 2 = 7.22 with continuity factor; p less than 0.01), and healthy unrelated control children (prevalence of 13%, chi 2 = 5.03 with the factor of continuity; p less than 0.02) “. This suggests that feeding infants soy formula is associated with autoimmune thyroid disease in the early years.
Another study found that the compounds of acidic methanol extracts of soy inhibit thyroid peroxidase (TPO) catalysed reactions required for the synthesis of normal thyroid hormones. Inhibition of thyroid hormone synthesis can lead to goiter and thyroid neoplasia.
4. Brain damage – a large study involving 3,734 elderly Japanese-American men, those who consume more soy during middle age had a 2.4 times greater risk of developing Alzheimer’s disease later in life. These men consume tofu at least twice a week and had cognitive impairment than those who never ate or only sporadically consume tofu.
These researchers also found that high consumption of tofu during midlife was associated with lower brain weight. 574 men were evaluated for brain atrophy using an MRI machine, and even brain shrinkage occurs naturally with age, men who ate the most tofu had “an exaggeration of the usual patterns we see in aging” .
5. Children abnormalities – Problems related to babies and soy it is an important issue, especially for mothers who choose to use soy formulas for infants instead of breastfeeding mother. According to Mary G. Enig, Ph.D., “the amount of phytoestrogens found in the value of soy infant formula a day equals 5 birth control pills.”
Soy-infant formulas contain high levels of isoflavones, and exposure of children to this daily intake wrong to fold increased exposure of isoflavones 6-11 (based on body weight) than the dose that creates hormonal changes in adults consuming soy foods. When babies were tested for concentrations of isoflavones in the blood circulating levels were 13.000 to 22.000 times higher concentrations of natural estrogens in the early years.
The biggest problems surrounding soybean
1. Genetic Modification (GM) – Did you know that up to 91% of the soybeans grown in the USA Soybeans are specially selected to withstand the toxic herbicide Roundup.
This means that soybeans themselves are loaded with this toxic pesticide. In addition, genes of bacteria that produce a foreign protein to human food supply also inserted into genes soybean plant, making this food supply unnatural food.
2. It contains toxins “anti-nutrients”; hemagglutinin; goitrogens; phytates -. therefore poor health
anti-nutritional factors such as saponins, soyatoxin, phytates, protease inhibitors, oxalates, Goitrogens and estrogen all interfere with our digestive enzymes of proteins and result in poor digestion and
The soybean hemagglutinins also contain substances that act as inducers (clot causes red blood cells to stick together). This causes the red blood cells can not absorb and distribute oxygen throughout the body. Goitrogens are a category of foods that promote the formation of goiter (enlarged thyroid) – and soy foods fall into that category. Block the synthesis of thyroid hormone and obstruct iodine metabolism.
The soybean has one of the highest phytate levels of any grain or legume. Phytates prevent the absorption of minerals such as calcium, magnesium, iron and zinc by binding to metal ions and prevents it from entering the cells of your body. Like many vegans consume soy products, and rely on them for accurate absorption of these minerals they may be doing just the opposite.
3. It contains isoflavones – Soy contains isoflavones genistein (as seen above) and daidzein. Isoflavones are a type of phytoestrogen that the human compound called resemble estrogen. Phytoestrogens have been found to block the hormone estrogen and can have serious effects on human tissues, such as the disruption of endocrine function, causing infertility and to promote breast cancer in women.
4. Toxic manganese levels of aluminum – aluminum tanks are used to process soybeans and acid washed before consumption. Aluminum particles from deposits are absorbed directly in soybeans, and give rise to high concentrations of aluminum in the grain. Soy infant formula also contains higher levels of manganese 80 times that found in human breast milk.
5. Concerns soy infant formula – Soy isoflavones in infant formula is of great concern for new and expectant parents who choose to bottle feed instead of giving chest. As seen throughout this article, it is clear that the isoflavones in soy formula can adversely affect the health of your child (difficult sexual development and reproductive health).
Soy products that are good for you
Choose fermented soy products such as:
1. Tempeh – fermented soybean cake that is firm and has a, mushroom nutty flavor
2. miso – fermented soybean paste that is quite salty and commonly used in miso soup
3. Natto – sticky fermented soybeans with a strong flavor, cheesy
4. soy sauce – fermented soybeans, salt and enzymes
soy products to avoid:
– TVP (texturized vegetable protein) or soy protein isolate
– soybean oil – soy milk
– cheese soy, soy ice cream, soy yogurt
– soy “meat”
– soy protein
– Soy infant formula
– Avoid all processed foods, and only buy whole foods prepared by yourself! Many packaged food products containing soy.
What should eat soy instead?
Many vegans consume “mock meat” usually made of fermented soybeans that are not. As an alternative to the above list you can eat:
– Tofu – Instead, eat tempeh (which is similar, only more dense)
– Soybean oil – Instead, use olive oil, hemp seed oil, coconut oil, etc.
– soy milk – However, drinking hemp, rice, almonds, coconut or oat milk
– tofu, soy ice cream, soy yogurt – Instead of eating Daiya cheese (much better than tofu), and coconut or banana ice cream (you can use bananas as yogurt too if you wanted – just mix up)
– soy “meat” – instead , eat tempeh
– soy protein – instead, eat healthy for the heart, amino-acid canned hemp protein
– I’m infant formula – instead, the formulas infant feeding that are free of soybean