21-Day Vegan Kickstart

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Forums: January 2011 Kickstart Forum: Question about Soy?
Created on: 01/11/11 04:22 PM Views: 1657 Replies: 5
Question about Soy?
Posted Tuesday, January 11, 2011 at 4:22 PM

I have been hesitant about adding soy to my diet because my doctor said that studies have shown that soy can interfere with thyroid functioning.

I watched a segment about soy on a Food For Life TV youtube. Can you speak on the thyroid issue? I feel confused.

Thanks - I am really enjoying the kickstart, all the information and resources.

Carolyn

RE: Question about Soy?
Posted Tuesday, January 11, 2011 at 4:32 PM

Hi Carolyn,
If you check back to the thread "Introductions Anyone", there is a good bit of information about goitrogenic foods. I think this should alleviate your concerns. Let me know if you have any questions – this is a topic that's near and dear to my heart! Smile

Molly Horn

RE: Question about Soy?
Posted Tuesday, January 11, 2011 at 4:39 PM

I have Jillian Michaels as a friend on facebook.. she JUST posted this 17 hours ago.. "I see I opened a lot of questions on Thyroid w/ my post below. I'm going to have Dr Van Herle (my endocrinologist) as a guest on my radio show. We're taping on the 22nd & I will make her available to take your calls & questions. I'll put a call in number up ahead of time. Rules of thumb on thyroid - no soy. No raw cr...uciferous vegetables. No peanuts. Take a daily multi & pro biotic."

Perhaps someone from PCRM should call in to that radio show?
Cynthia

RE: Question about Soy?
Posted Tuesday, January 11, 2011 at 6:29 PM

In short:

Thyroid Health

Clinical studies show that soy products do not cause hypothyroidism. However, soy isoflavones may take up some of the iodine that the body would normally use to make thyroid hormone. The same is true of fiber supplements and some medications. In theory, then, people who consume soy might need slightly more iodine in their diets. (Iodine is found in many plant foods, especially in seaweed and iodized salt.) Soy products can also reduce the absorption of medicines used to treat hypothyroidism. People who use these medicines should check with their health care providers to see if their doses need to be adjusted.

In long:

http://www.pcrm.org/health/prevmed/soy_health.html
http://www.nutritionmd.org/health_care_providers/endocrinology/hypothyroidism_nutrition.html
http://www.nutritionmd.org/nutrition_tips/nutrition_tips_understand_foods/soy_questions.html

Susan Levin, MS, RD
PCRM Director of Nutrition Education

RE: Question about Soy?
Posted Wednesday, January 12, 2011 at 11:18 AM

Hi All,

Thanks for your comments - Susan, Molly, and Cynthia.

I had forgotten about there being some concern over cruciferous vegetables. I eat lots and lots and I have never had any problems. That seems silly to me. Often, I prepare sort of a continuous raw vegetable tray along with a bean dip. I eat some before my dinner as an appetizer or sometimes along with my meal just to add additional vegetables. Raw cauliflower and broccoli are always available. I also eat broccoli soup and mashed cauliflower often as these are readily available and my favorites.

Molly - I read the thread "Introductions Anyone" thanks for the information.

Carolyn

RE: Question about Soy?
Posted Wednesday, January 12, 2011 at 11:33 PM

Wow, I don't know how I missed that information about soy and thyroid. I'm thinking maybe this is why my last two thyroid function tests have come back too low, that necessitated increases in my meds, as I've been eating a lot of soy since I first started this plan. Yikes!! Surprised


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