Soya milk is rich in lean plant protein. As proteins are considered the building blocks of the body, it can prove to be very useful for the developing fetus. Besides, it can also serve as a source of nourishment for the mother. As the fetus derives its nourishment from its mothers diet, it can also benefit from soy milk. Earlier soya milk was linked to breast cancer in mothers. However, a study has not only proved the correlation wrong, but has also established the fact that soy milk actually reduces the risk of cancer. However, as the study was conducted on only a few subjects, its findings are questionable. Nonetheless, there is also no evidence to suggest that soya milk affects the mother's health negatively.