Seeking healthful foods, Americans are eating more soy than ever. But recent research with animals shows that consuming large amounts could have harmful effects on female fertility and reproductive development. Many of soy's health benefits have been linked to isoflavones—plant compounds that mimic estrogen.
Likewise, people ask, can breast cancer survivors eat soy?
Though the estrogen-like properties of soy seem like they could increase the risk of breast cancer recurrence or mortality (death), current studies suggest that eating moderate amounts of soy foods is safe for breast cancer survivors.
Because estrogen can promote the development, growth, and spread of breast cancers, doctors have worried that eating a lot of soy foods or soy isoflavones (which can be taken as a dietary supplement) might worsen the prognosis of women diagnosed with breast cancer.
Two nutrients that are especially important to your diet are vitamin D and zinc.
- Tuna. Tuna is rich in vitamin D, which has been linked to longer life and testosterone production.
- Low-fat milk with vitamin D. Milk is a great source of protein and calcium.
- Egg yolks.
- Fortified cereals.
They're structurally similar to the principal female hormone, estrogen, and are believed to have similar effects in the body. As high estrogen level in men are almost always a direct route to low testosterone levels, eating soy – which contains estrogenic compounds – is often blamed for lowering testosterone.
Messina suggests, based on the totality of available data and practical dietary standards, that aging individuals should ingest 15-20 grams of soy per day, including 50-90 mg of isoflavones—recommendations that have been echoed by other researchers worldwide.20 He adds that an intake of 25 grams per day of soy protein
In general, ~ 3 soy protein servings/day is suggested as part of a healthy diet. 1 serving=1 cup of soy milk or 1/2 cup of tofu. Based on clinical and epidemiological studies, recommendations for adult intake of soy protein is 15-25 grams per day or 2-4 servings of soy foods per day.
It is good to take everyday, but soy can produce excess estrogen. So I guess it should be eaten in moderation. A 3.5-ounce serving of soya chunks contains over 54 grams of protein. The recommended daily intake of protein is 56 grams for men and 46 grams for women.
Food and products that contain or often contain soy:
- Bean sprouts.
- Bread crumbs, cereals and crackers.
- Breaded foods.
- Hydrolyzed plant protein (HPP), hydrolyzed soy protein (HSP) and hydrolyzed vegetable protein (HVP)
- Imitation dairy food.
- Infant formula, follow-up formula, nutrition supplements for toddlers and children.
Studies show that eating foods with phytoestrogens can reduce the amount of estrogens in the body, and this could easily cause or aggravate acne in some women. Soy allergies are fairly common, and food allergies can cause skin problems. Soy allergy/sensitivity is probably the reason it causes acne for some people.
Soybean protein naturally contains compounds called isoflavones, predominantly genistein and daidzein. These compounds are not estrogens and do not directly add to estrogen levels in the blood. In premenopausal women who have much higher natural estrogen levels, eating soy protein likely has no effect.
Excess sodium increases blood pressure because it holds excess fluid in the body, and that creates an added burden on the heart. Too much sodium will increase your risk of stroke, heart failure, osteoporosis, stomach cancer and kidney disease. And, 1 in 3 Americans will develop high blood pressure in their lifetime.
In the novel, most types of soylent are made from soya and lentils. The word also evokes the 1973 film adaptation Soylent Green, in which the eponymous food is made from human remains—something of a joke, since in reality people are made of Soylent (at least those who consume Soylent).
It said that although soya (tofu is made from soya beans) is unlikely to make healthy men infertile, it could have a significant effect on men who already have lower-than-average sperm counts. The idea that soy affects male fertility is not new, and there is a growing body of research on it.
Soybeans are a complete protein source and a dietary staple in many cultures. Soy contains phytoestrogens called isoflavones that may mimic the activity of the hormone estrogen in your body. The effects of soy isoflavones on human estrogen levels are complex.
There is protein in vegetables and grains, and even more in beans, nuts and seeds. I often eat protein-rich plant foods like tempeh, tofu, seitan, edamame, black beans, lentils, quinoa, soymilk, and raw nuts.
The Health Dangers of Soy
- High Phytic Acid (Phytates): Reduces assimilation of calcium, magnesium, copper, iron and zinc.
- Trypsin inhibitors: Interferes with protein digestion and may cause pancreatic disorders.
- Goitrogens: Potent agents that block your synthesis of thyroid hormones and can cause hypothyroidism and thyroid cancer.
Tofu, also known as bean curd, is a food cultivated by coagulating soy milk and then pressing the resulting curds into soft white blocks. It is a component in East Asian and Southeast Asian cuisines.
5 Ways Soy Upsets Hormone Balance. One of the issues concerning soy is its high level of phytoestrogens — compounds that mimic estrogen in the body. Isoflavones are estrogen mimickers that increase estrogenic activity. This may be helpful at times for relieving symptoms in menopausal women.
Consuming foods containing soy protein or taking soy protein products is LIKELY SAFE. Taking dietary supplements with soy extracts is POSSIBLY SAFE when used short-term (up to 6 months). Soy can cause some mild side effects such as constipation, bloating, and nausea.
Phenolic acid and phytates are antioxidants. Then there are the isoflavones, which are weak phytoestrogens (estrogen-like compounds found in plants). Isoflavone levels vary in different types of tofu and soy milk products. Your body's estrogen is much, much stronger than the estrogen-like isoflavones in soy.