When I started researching Hashimoto’s I was surprised to learn that soy is one of the worst foods you can eat. Some might argue that point, but I can tell you from personal experience that soy is one of the contributing factor to Hashimoto’s in my case. When I stopped eating soy, my condition improved. It took time to clean my body of the toxicity of many of the food I once ate. It also took hours of label reading because of the many name’s soy is masked under. Listed below are some foods where you may find soy hiding.

• Cold-pressed, expelled, or extruded soy oil*
• Edamame
• Miso
• Natto
• Shoyu
• Soy (soy albumin, soy cheese, soy fiber, soy flour, soy grits, soy ice cream, soy milk, soy nuts, soy sprouts, soy yogurt)
• Soya
• Soybean (curd, granules)
• Soy protein (concentrate, hydrolyzed, isolate)
• Soy sauce
• Tamari
• Tempeh
• Textured vegetable protein (TVP)
• Tofu

• Asian cuisine (including Chinese, Indian, Indonesian, Thai and Vietnamese)—even if you order a soy-free item, there is a high risk of cross-contact
• Vegetable Gum
• Vegetable starch
• Vegetable Broth
• Baked Goods

• Canned broths and soups
• Canned tuna and meat
• Cereals
• Cookies
• Crackers
• High-protein energy bars and snacks
• Infant formulas
• Low-fat peanut butter
• Pet food
• Processed Meats
• Sauces
• Soaps and moisturizers

*Highly refined soy oil is not required to be labeled as an allergen. Studies show that most people with soy allergy can safely eat highly refined soy oil as well as soy lecithin. If you are allergic to soy, ask your doctor whether you need to avoid soy oil or soy lecithin.1

You can see why I spent hours reading labels. On occasion, I would purchase a food item, get it home and realize it had soy in it. I believe one of the biggest contributors to soy in my diet was the Special K shake. I started drinking the shakes when a nutritionist told me I needed more protein in my diet. It was a quick way to supplement my diet with protein. I had no idea at the time it had soy as an ingredient. The lesson here – read your labels.

 A few years later I was diagnosed with Hashimoto’s. I’m not saying the Special-K shakes are the cause of Hashimoto’s. I’m telling you I believe they were a major contributing factor. If you have a better understanding of what soy is, you may be more willing to agree with what I’m saying.

Soy comes from the soybean which you may also know as edamame (raw form). As you see from the above list soy is found in many different forms. This makes it easy to add to many products from food to cosmetics and clothing.

I’m not a doctor but from what I’ve read I can tell you that soy blocks the activity of the thyroid peroxidase (TPO) enzyme. TPO is an enzyme made in the thyroid gland that is important in the production of thyroid hormone.2 It has been linked to the development of autoimmune thyroiditis and studies have shown that soy can affect thyroid medications, asthma, and menstrual cycles.

In addition to soy being linked to thyroiditis, many have developed allergic reaction/symptoms such as:

• Runny nose
• Trouble breathing
• Abdominal pain or loose stools
• Brain fog
• Agitation or mood swings
• Anxiety
• Heart palpitations
• Acid reflux
• Carpal tunnel
• IBS
• Weight gain
• Many others

I can also tell you that soy mimics the effect of estrogen in the body (xenoestrogen). To simply say, it’s an endocrine disruptor.  The scary thing about this statement is that it can start to affect the endocrine system in utero and the effects can be permanent. So, if you eat a lot of soy when you’re pregnant, then your child is affected by it. So here I pose a question. Is it possible that childhood illnesses are a result of soy in the diet? That’s a question for research. It makes sense though. If Thyroiditis in adults can mimic mental health issues why can’t it affect children too? That’s a topic for another blog.

Another reason soy isn’t good for people with thyroiditis is that soy is a goitrogen. Goitrogens suppress the thyroid gland by interfering with hormone production. When the thyroid is exposed to goitrogens, the thyroid reacts by enlarging to compensate for the reduced hormone production. The result is what is known as a goiter.

Please don’t confuse the goitrogens in soy with that of cruciferous vegetables (cabbage, broccoli, kale, etc.). The goitrogens in soy are not equal to that on cruciferous vegetables. Soy has been linked to autoimmune thyroiditis, other foods have not and don’t generally pose a threat. This is a misconception I believed when I first began my journey to heal my thyroid.

There are many things to learn about the thyroid and the diseases, illnesses, and conditions that affect it. Not only as a layperson but as a medical provider and those in the scientific community. If they don’t know what causes thyroiditis (in its many forms), and they don’t, how can they know how best to treat it. In most case the medical community is quick to prescribe medication versus changing the patient’s diet, at least initially to see if a change occurs. I’m thankful that my doctor took the time to let me work through and find a natural way to manage Hashimoto’s.

Until we know what causes these thyroid conditions, we must be diligent and look for a natural way to understand our thyroid health. We must listen to our bodies, do our homework, and change our lifestyle’s. If we can be disciplined in our habits and open-minded in our approach, and be willing to spend time researching thyroid health, we can enjoy good health.

 I will do my part to provide you with information that will help you on your journey to a healthy lifestyle. Remember though, I’m not a doctor, and you are your best advocate for your health.