Breast enlargementSoy contains isoflavones, phytoestrogens that mimic the female hormone estrogen and thus can exert a weak estrogenic activity in our body. It is known that estrogen stimulates the growth of breast tissue and the question is whether soy isoflavones can exert the same effect. It is said that if you regularly consume soy products your breasts enlarge by one to two cup sizes.
The effect of soy isoflavones on breast enlargement has never been a subject of an objective scientific study. The only aspect that has been examined is the effect of isoflavones on the risk of breast cancer and, luckily, most of these studies indicate a protective effect of isoflavones. However, you can find on the internet many types of so called breast pills on the market that mainly contain isoflavones derived from hops.
A clinical study commissioned by BreastGro to investigate the effect of their pills on cup size found in one third of the women increased the volume of their breasts with 1 to 2 cups. The largest increase in breast volume was observed in women who have been pregnant. According to their study BreastGro pills showed no negative side effects in women. However these clinical experiments are not designed as double-blind, placebo-controlled studies and are therefor not reliable.
However, we do receive a lot of messages from women claiming their cup size increased after they their intake of soy products. We believe that this effect is due to increased caloric intake. The added sugars in soymilk may indeed increase cup size but at the same time they result in unwanted weight gain.