The effect of whether you can drink soy milk during menstruation to enlarge your breasts may be minimal and may not be easy to achieve if you want to achieve better results. Although soy milk contains soy isoflavones and contains a large amount of group hormone components, such as estrogen and progesterone, estrogen and progesterone can indeed promote the vasodilation of the breast, but the effect may not be particularly obvious through dietary therapy treatment. Because you may drink a lot of soy milk every day, for example, 3 meals a day, 500ml once, most women may not be able to tolerate it. If you want to enlarge your breasts, you can also change to other ways, maybe surgery or massage, which can be adjusted according to your condition. If you want to go through food, the effect may be slower and you need to combine it with the advice of a plastic surgeon for detailed guidance.