Soy making intersexualized babies

[prime]

Infants who consumed soy-based formula as newborns had differences in some reproductive-system cells and tissues, compared to those who used cow-milk formula or were breastfed, according to a new study.

However, soy protein contains high amounts of genistein, an estrogen-like compound. Like other estrogen-mimicking chemicals found in the environment, genistein can alter the body's endocrine system and potentially interfere with normal hormonal development. In laboratory studies genistein causes abnormal reproductive development and function in rodents, but little is known about its effects on infants.

Vaginal cell MI was higher and uterine volume decreased more slowly in soy-fed girls, both of which suggest estrogen-like responses. The study team found similar patterns in differences between soy-fed girls and breastfed girls.

https://www.sciencedaily.com/releases/2018/03/180312150509.htm

Despite being derived from natural sources, phytoestrogens are potent estrogen receptor activators and can induce biological effects similar to endogenous and synthetic estrogens (Patisaul and Jefferson, 2010). The isoflavone genistein is the most abundant phytoestrogen in soy products (Adlercreutz and Mazur, 1997), and therefore has an increased potential to impact human health. Diet is the most common route for phytoestrogen exposure, and adult dietary phytoestrogen exposure varies based on available food resources, cultural norms, and dietary choices.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8712417/

Mean (SD) plasma concentrations of genistein and daidzein in the seven infants fed soy-based formulas were 684 (443) ng/mL and 295 (60) ng/mL, respectively, which was significantly greater (p<0·05) than in the infants fed either cow-milk formulas (2·2 [0·7] and 2·1 [0·3] ng/mL), or human breast-milk (2·8 [0·7] and 1·4 [0·1] ng/mL), and an order of magnitude higher per bodyweight than typical plasma concentrations of adults consuming soy foods.

https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(96)09480-9/abstract