Does Soy Lead to Gynecological Issues?

Does soy lead to gynecological issues? Is it disruptive for women’s health, and what does science have to say about it? Sharon answers questions surrounding this plant-based protein source.

Does Soy Lead to Gynecological Issues?

Question: Can soy disrupt the menstrual cycle? 

Sharon’s Answer: A number of women’s health concerns, such as breast cancer and fertility, have been raised regarding the intake of soy foods, namely because of the presence of phytoestrogens—plant estrogens—contained in soy. However, these concerns have been quelled, as research does not link moderate soy intake to breast cancer risk or fertility. In fact, there may be benefits for women from consuming moderate (one to two or three servings per day) intake of whole soy foods, like tofu, soybeans, soymilk, and edamame. It may actually cut the risk of breast cancer, increase fertility, aid in hot flashes, and even help you maintain healthy bones and a healthy heart. Check out this wonderful article on soy from Harvard School of Public Health, as well as my blog on soy myth busters.

When it comes specifically to menstrual cycle, there is not a large body of evidence on this subject. One study found no link in length of menstrual cycle related to intake of soy in Japanese women. However, one study found that 60 g/day of soy protein for one month increased follicular phase length/and or delayed menstruation. Note that 60 grams per day is a lot of soy protein, and exceeds moderate intake levels, which would be more around an upper limit of 25 grams per day.

Eat and Live Well,

Sharon

Image: Savory Steel Cut Oats with Spinach, Mushrooms, and Tofu, Sharon Palmer, MSFS, RDN

Check out the other nutrition questions I’m answering at The Plant-Powered Dietitian:

How to You Make Aquafaba?
How do I Get Vitamin D on a Plant-Based Diet?
How Do I Eat for Better Digestion?