Is Purple Sweet Potato Safe for Women with Hormonal Concerns? - Nutrition

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Purple sweet potato


Hello, my mother has a gynecological condition, and the doctor advised her to avoid foods rich in estrogen, such as soy and yam.
I heard that sweet potatoes are a great food option, so I recently bought some purple sweet potatoes in Hualien.
However, my mother is concerned that since they are purple, they might contain estrogen like yams.
Can you tell me if purple sweet potatoes are suitable for her to eat? Do they contain estrogen? Thank you!

SHIN, 30~39 year old female. Ask Date: 2010/08/03

Dr. Shi Guimei reply Nutrition


Dear SHEEN: Hello! Purple sweet potato is still a type of sweet potato, but it contains purple pigments.
In terms of food classification, it falls under the category of staple foods, and consuming it in moderation is perfectly fine.
Wishing you happiness and health! Sincerely, Dietitian Shih Kuei-Mei, Director of the Nutrition Department, Taoyuan Hospital, Ministry of Health and Welfare.

Reply Date: 2010/08/03

More Info


Purple sweet potatoes are generally considered safe for women with hormonal concerns, including those with gynecological diseases. Unlike soy products and yam, which are known to contain phytoestrogens—plant-derived compounds that can mimic estrogen in the body—purple sweet potatoes do not have significant estrogenic activity. Instead, they are rich in antioxidants, vitamins, and dietary fiber, making them a nutritious addition to a balanced diet.

The primary concern with phytoestrogens arises from their potential to influence estrogen levels in the body, which can be particularly relevant for women with hormone-sensitive conditions. Foods like soybeans, tofu, and certain types of yam contain isoflavones, which can bind to estrogen receptors and may affect hormonal balance. However, purple sweet potatoes do not fall into this category. They are primarily composed of carbohydrates, fiber, and various beneficial nutrients, including vitamins A and C, potassium, and anthocyanins, which are the pigments that give them their distinctive purple color.

Anthocyanins are powerful antioxidants that have been linked to various health benefits, including anti-inflammatory properties and improved cardiovascular health. They may also support immune function and have been studied for their potential role in cancer prevention. Therefore, incorporating purple sweet potatoes into your mother's diet can be beneficial, especially if she is looking for healthy carbohydrate sources that do not interfere with her hormonal health.

When preparing purple sweet potatoes, it is essential to cook them properly to maximize their nutritional benefits. Baking, steaming, or boiling are excellent methods that preserve their nutrients while enhancing their natural sweetness. Avoid frying or adding excessive sugars or unhealthy fats, as this can negate some of their health benefits.

In addition to purple sweet potatoes, your mother may consider other foods that are low in phytoestrogens and high in nutrients. Leafy greens, cruciferous vegetables (like broccoli and cauliflower), whole grains, and lean proteins can all contribute to a balanced diet without the risks associated with high phytoestrogen foods.
It is also advisable for your mother to consult with her healthcare provider or a registered dietitian for personalized dietary recommendations, especially considering her specific health conditions. They can provide tailored advice that considers her overall health, dietary preferences, and any other treatments she may be undergoing.

In summary, purple sweet potatoes are a safe and nutritious option for women with hormonal concerns. They do not contain significant levels of phytoestrogens and can be a valuable part of a healthy diet. Encouraging a diverse range of foods while focusing on whole, minimally processed options will help support your mother's health and well-being.

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