Not really.

After a woman enters puberty, her mammary glands develop and mature under the action of estrogen. In addition to genetic factors, estrogen levels often directly determine the size and fullness of the breasts. The counter-example is that when a woman enters menopause, her breasts shrink and sag due to a significant drop in estrogen levels.　　

Compared with the estrogen secreted by the human body, phytoestrogens only have a similar molecular structure and can bind to estrogen receptors in the body to produce estrogen-like effects, but the effect is much weaker than that of true estrogen.　　

The role of phytoestrogens in the body is biphasic, when the body's estrogen content is very low, it can play a role in supplementing estrogen; when the body's estrogen content is very high, due to its binding to the receptor impedes the normal combination of physiological estrogen and the receptor, but instead of inhibitory effects, equivalent to reducing estrogen levels, weakening the role of estrogen.

So, by drinking soy milk or supplementing with phytoestrogens, you can't raise the level of estrogen in your body and promote the development of breasts.

Expanded:

6 cases of soybean milk is best not to drink

1, soybean milk nature of cold, indigestion, hiccups and kidney function is not good people, it is best to drink less soybean milk. In addition, acute gastritis and chronic superficial gastritis should not eat soy products, so as not to stimulate excessive secretion of gastric acid aggravate the condition, or cause gastrointestinal flatulence.

2, added brown sugar soybean milk, not easy to be absorbed by the body. Because brown sugar has a variety of organic acids, they and soybean milk protease combination, and add white sugar will not have this phenomenon.

3, was warm bottle insulation of soybean milk, warm bottle insulation this method is not desirable, because the warm bottle temperature and humidity of the internal environment is very conducive to bacterial reproduction. In addition, the soap toxins in the soybean milk can also dissolve the scale in the thermos, drinking will jeopardize human health.

4, because soy milk is made from soy, and soy inside the purine content is very high, and belongs to the cold food, so there are gout symptoms, fatigue, weakness, mental fatigue and other symptoms of cold body are not suitable for drinking soy milk.

6, covered with a lid cooked soybean milk. Soybean milk not only must be boiled, but also in the cooking of soybean milk must be open lid, this is because only open lid can let the harmful substances in soybean milk with the water vapor evaporation.

References: