May 4


Do You Need to Avoid Soy with Hashimoto’s?

By Sunny Brigham, MS, CNS, LDN

May 4, 2021

It’s no secret that there’s a lot of information on the internet about soy and the thyroid. But, how much of it is true?

If you haven’t asked yourself this, you should!

Soy has a lot of great benefits. It’s protective against breast cancer. It helps by balancing your good to bad estrogen ratio. So, if you’re estrogen dominant, breast cancer won’t be a major concern for you.

Let’s just dispel a myth right here…soy doesn’t contain estrogen. That’s completely false. It doesn’t increase your estrogen either. But it does bind to estrogen receptors in the body. Because it does this, it can FEEL like it’s increasing estrogen.

Soy is also protective against prostate cancer in men. Also, it doesn’t give men boobs. Promise!

But does soy inhibit thyroid function? Yes and no. Clear as mud, right?

So, in large amounts, soy (a goitrogen) can bind to iodine preventing the thyroid from getting the iodine that it needs for proper T4 to T3 conversion. But, there are so many other things that impair this process as well.

Other goitrogenic foods like cauliflower, broccoli, and kale get the same bad rap when it comes to the thyroid. Yes, they can impair T4 to T3 conversion…in large amounts. This is the same a with soy.

Large amounts would be upwards of 5-6 cups per day! That’s way more soy and cruciferous veg than anyone is eating right now! But no one is talking about alllllll the other goitrogens out there…

Like strawberries, peaches, mustard, and red wine! Why aren’t these getting talked about? Who knows really. But the biggest contributor to thyroid disruptive goitrogens are your personal care products. Instead of focusing on cutting fruits and vegetables to bring you nutrients your body needs, focus on cutting back on junk in your lotions and make up.

The Environmental Working Group is a great place to start when it comes to seeing what’s in your products. Remember, your skin is an organ too. And this very large organ absorbs everything you put on it.

My advice? Start there if you’re concerned with thyroid function and goitrogens.

Bottom line though…no one needs to avoid soy unless they’re allergic or intolerant.

Click below to get the full scoop in the video!

What are your burning soy questions?

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