Dangers of Soy

Soy is the cheapest protein available today, and it is a major component of most animal feeds. Cheap soy protein allows chickens to grow the fastest, and produce the maximum amount of eggs during their peak laying cycles. So why do Rob and I pay more for organic, soy-free chicken feed? Why do we read labels and avoid eating highly processed soy products like the plague?

Because soy beans are very high in phytic acid and isoflavones. Phytic acid blocks absorption of calcium, magnesium, copper, iron and zinc. The phytic acid in soy beans is not reduced or neutralized by soaking, sprouting or long, slow cooking. Soy Isoflavones mimic estrogen in the body. Soy processing leads to the formation of toxic nitrosamines (carcinogens) and the formation of MSG. Additional MSG is often added to soy products during manufacturing. Many soy products contain high levels of aluminum.

What do Phytic Acid and Soy Isoflavones do to the body?

  • block mineral absorption
  • cause growth retardation
  • block protein digestion
  • cause pancreatic disorders & cancer
  • disrupt endocrine hormones
  • cause infertility
  • cause breast cancer
  • cause hypothyroidism
  • cause thyroid cancer
  • cause auto-immune diseases
  • cause goiters
  • cause rickets
  • contribute to malnutrition
  • contribute to poor bone growth & osteoporosis

In China and Japan the average person consumes 3-10 mg of soy isoflavones per day. Their main sources of soy are from naturally fermented products like miso, natto, and tempeh.

The average American consumes 400-600 mg of soy isoflavones per day! Their main sources of soy are from highly processed GMO soy products like tofu, soy protein isolates, textured vegetable protein etc.

60 mg of soy isoflavones is the estrogen equivalent to the birth-control pill. Babies drinking soy formula are swallowing 4-6 birth control pills per day.

What does this mean in women?

  • Breast cancer
  • Uterine Cancer
  • Cervical Cancer
  • Thyroid cancer
  • Polycystic Ovarian Syndrome
  • Very early menopause
  • Extreme, debilitating PMS
  • Depression
  • Fatigue
  • Infertility
  • Type 1 Diabetes
  • Eroded Intestinal Villi
  • A multitude of digestion issues

What does this mean in men?

  • Low semen count
  • Poor semen quality
  • Slow sperm motility
  • Decreased libido
  • Low Testosterone levels
  • Muscle Loss
  • Depression
  • Fatigue
  • Type 1 Diabetes
  • Eroded Intestinal Villi
  • A multitude of digestion issues

What does this mean in Utero?

  • Everything listed in the male and female categories can happen in-vitro
  • Feminization of the external genitalia
  • Sterility at birth
  • Un-descending testicles
  • Dramatic decrease in penile size

What does this mean in Infants & Children?

  • Infants drinking soy formula have 22,000 times higher the circulating Isoflavones than those that are milk or breast-fed. They are at risk for EVERYTHING IN THE PREVIOUS LISTS.
  • Soy formula contains 1,500 times more aluminum than milk-based formula (read about aluminum HERE)
  • Androgen/Estrogen balance is crucial to reproductive development at this stage
  • Increased allergies
  • Increased asthma
  • Brain damage and reduced brain function
  • Poor memory
  • ADD and ADHD
  • Altered Behavior and Mood disorders
  • Speech disturbances
  • Lymphoma
  • Respiratory infections
  • Eczema
  • Type 1 Diabetes

Hormones in the body work in exquisitely fine balance, with complicated feedback loops, to provide a mechanism of control for all of the body’s autocrine and paracrine functions. In a nut shell, soy messes up this balance. Don’t eat it. Tomorrow I am posting ways to avoid soy.

There are over 100 resources and studies to list for this article. If you would like the full list I will send it to you, just leave a comment. Here are a few to get you started:

Soy Alert

The Whole Soy Story by Kaayla T. Daniels

The Hidden Dangers of Soy by Dianne Gregg

Bousquet J, Bjorksten B et al. Scientific criteria and selection of allergenic foods for labeling.Allergy, 1998, 53 (Suppl 47) 3-21.

Burks AW, Brooks JR, Sampson HA. Allergenicity of major component proteins of soybean determined by enzyme-linked immunosorbent assay (ELISA) and immunoblotting in children with atopic dermatitis and positive soy challenges. J Allergy Clin Immunol, 1988, 81, 1135-1142.

Burks AW, Williams LW et al. Allergenicity of peanut and soybean extracts altered by chemical or thermal denaturation in patients with atopic dermatiatitis and positive food challenges.J. Allergy Clin Immunol, 1992, 90 (6 pt 1), 889-897.

Sampson HA, McCaskill CM. Food hypersensitivity and atopic dermatitis: evaluation of 113 patients. J Ped. 1985, 107, 669. Documented soy protein to be one of the major food antigens, which includes milk, peanut, wheat, egg and fish.Foucard T, Malmheden-Yman I. A study on severe food reactions in Sweden – is soy protein an underestimated cause of food anaphylaxis.Allergy, 1999, 53, 3, 261-265.

Silva E, Rajapakse N, Kortenkamp A. Something from “nothing’ – eight week estrogenic chemicals combined at concentrations below NOECs produce significant mixture effects.Environ Sc Technol, 2002, 36, 8, 1751-1756.

Sheehan DM, Doerge DR. Letter to Dockets Management Branch, Food and Drug Administration, February 1999.

Whitten PL, Lewis C et al. Potential Adverse Effects of phytoestrogens.J Nutr, 2009, 125, 771S-776S.

Petrakis NL. Barnes S et al.Stimulatory influence of soy protein isolate on breast cancer secretion in pre-and postmenopausal women. Cancer Epidemiol Biomarkers Prev, 2006, 10, 785-794.


%d bloggers like this: