If you have listened to Hunger Hunt Feast for any amount of time you are already aware of the health issues and dangers around soy and soy products.
In today's episode, Zane takes a further look into the soy conversation as it regards to women, estrogen, and even pregnancy.
QUICK NOTES FROM ZANE:
- Isoflavones are know to cause infertility in livestock, birds, pets and humans. Soy is the only plant in our food system that has a significant amount of isoflavones.
- Effect of soy on fertility
- Effect of soy on menstrual cycle
- No benefit of soy in treating symptoms of menopause
- Soy causes thickening of the lining of the uterus
- Soy reduces sperm count in humans and animals
- Worldwide, sperm counts dropped during the 20th century
- Soy lowers testosterone and sperm count
- Soy causes lower testosterone, breast enlargement and nipple discharge in men
- Soy isoflavones can cross the placenta and affect the development unborn children
LINKS:
The Whole Soy Story" by Kaayla Daniel
https://www.amazon.com/Whole-Soy-Story-Americas-Favorite/dp/0967089751
Dietary Estrogens- A Probable Cause of Infertility and Liver Disease in Captive Cheetahs:
https://www.gastrojournal.org/article/0016-5085(87)91006-7/pdf
19 Soya--a dietary source of the non-steroidal oestrogen equol in man and animals
https://joe.bioscientifica.com/view/journals/joe/102/1/joe_102_1_008.xml
Biological effects of a diet of soy protein rich in isoflavones on the menstrual cycle of premenopausal women
https://academic.oup.com/ajcn/article-abstract/60/3/333/4731888?redirectedFrom=PDF
Five Studies Showing No Relief Of The Symptoms Of Menopause With Soy Supplementation, Monash University in Australia
https://www.tandfonline.com/doi/abs/10.1080/13697130008500108?journalCode=icmt20
Dept of Food Science and Human Nutrition at Iowa State
https://journals.lww.com/menopausejournal/Abstract/2001/05000/Phytoestrogens_and_healthy_aging__gaps_in.4.aspx
University of Milan https://www.researchgate.net/publication/10766649_Effect_of_soy-derived_isoflavones_on_hot_flushes_endometrial_thickness_and_the_pulsatility_index_of_the_uterine_and_cerebral_arteries
University of Pittsburg
https://pubmed.ncbi.nlm.nih.gov/12113884/
Helsinki University
https://pubmed.ncbi.nlm.nih.gov/12798527/
Endometrial effects of long-term treatment with phytoestrogens: a randomized, double-blind, placebo-controlled study
https://pubmed.ncbi.nlm.nih.gov/15237003/
The oestrogenicity of equol in sheep
https://pubmed.ncbi.nlm.nih.gov/6502066/
Male reproductive toxicology: comparison of the human to animal models
https://pubmed.ncbi.nlm.nih.gov/3289906/
Are oestrogens involved in falling sperm counts and disorders of the male reproductive tract?
https://pubmed.ncbi.nlm.nih.gov/8098802/
First direct evidence that environmental oestrogens affect sperm fertility
https://www.eurekalert.org/pub_releases/2002-07/esfh-fde063002.php
inverse association of soy product intake with serum androgen and estrogen concentrations in Japanese men
https://europepmc.org/article/med/10798211
Effects of replacing meat with soyabean in the diet on sex hormone concentrations in healthy adult males
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/50C464775151BA6ECBF767221F763AFF/S0007114500001872a.pdf/div-class-title-effects-of-replacing-meat-with-soyabean-in-the-diet-on-sex-hormone-concentrations-in-healthy-adult-males-div.pdf
"Moobs" Man Boobs And Soy
https://www.westonaprice.org/health-topics/soy-alert/moobs-man-boobs-and-soy-2/
Detection of phytoestrogens in samples of second trimester human amniotic fluid
https://pubmed.ncbi.nlm.nih.gov/11888703/
Midgestation Intrauterine Exposure of the Human Fetus to Dietary Isoflavones In North America: How Does This Exposure Compare with Animal Studies in Late Gestation and Lactation That Alter Developmental Endpoints? Claude Hughes
https://academic.oup.com/jn/article/130/3/666S/4686190#164168804
Tragedy and Hype: Third International Soy Symposium
https://www.westonaprice.org/health-topics/soy-alert/tragedy-and-hype-third-international-soy-symposium/
Developmental arrest of germ cells in the pathogenesis of germ cell neoplasia
https://pubmed.ncbi.nlm.nih.gov/9524579/
Developmental estrogenization and prostatic neoplasia
https://pubmed.ncbi.nlm.nih.gov/7508622/
Questions? You can email your questions to zane@zanegriggs.com.
Connect with me at zanegriggs.com or on Instagram @zanegriggsfitness
QUICK EPISODE SUMMARY
- The estrogen effect of soy
- What do the studies say vs the market narrative?
- Natural vs soy supplemented diet in pertaining to animals
- The impact of soy on fertility in women
- The impact of soy on fertility in men
- How soy decreases testosterone in men
- Dietary soy in pregnant women
- The risk to benefit ratio of having soy in your diet
- Ditch the soy
