Reproductive Development of Babies Fed with Soy-based Formula Showed Changes

As per a latest study bearing the title “A longitudinal study of estrogen-responsive tissues and hormone concentrations in infants fed soy formula,” compared to male infants, female ones are observed to be more affected with soy-based formula. Tissues and cells in their reproductive system showed some differences, according to the researchers. The period from 28 and 36 weeks after birth was taken into account when comparing breastfed and cow milk formula-fed infants with those given soy-based formula.

Nearly 410 female and male infants were observed for their hormone levels. In females, the maturation index of tissues and cells in their reproductive system was measured, which include follicle stimulating hormone, breast-bud diameter, uterine volume, and urethral epithelial and vaginal cells.

Soy-based Formula Triggers Interference in Normal Hormonal Development of Babies

While male infants who were fed with soy-based formula instead of breast milk or cow milk formula showed no differences, females were found to exhibit greater differences. Higher vaginal cell maturation index and decreased rate of uterine volume were observed in them. Changes in response to increased estrogen exposure were found to be consistently followed by developmental changes.

Soy-based formula is usually used as an alternative to cow milk formula by mothers who don’t breastfeed. This is mainly due to concerns over lactose intolerance and milk allergies. However, it could cause problems in the normal hormonal development of babies because there is a high chance of exposure to estrogenic isoflavones, as per a Journal of Clinical Endocrinology and Metabolism study published earlier in March.

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