Why does soy milk increase estrogen?

Soy isoflavones activate your body's estrogen receptors, proteins that detect the presence of estrogen and carry out effects such as changes in gene expression. However, isoflavones do so more weakly than your body's natural estrogen. read more

Soy contains estrogen-like compounds called isoflavones. However, isoflavones don't act exactly like estrogen in the body. In fact, some studies have shown they actually help decrease estrogen levels. read more

And when you consume soy protein, you’re actually courting the Mr. Hyde side of two natural drugs: genistein and daidzein. Both act so similarly to estrogen that they’re known as phytoestrogens (plant-produced estrogens). read more