There are so many reasons for low thyroid function, yet I see many patients whose doctors have ignored this problem. One young female patient had more than 30 percent body fat and was unable to change her body no matter how hard she worked. She ate perfectly, exercised with a trainer every day, yet her body wouldn’t budge. She also had a slightly depressed mood and other vague symptoms.
I suspect that there is actually enough iodine in the environment to go around, and that we actually need less than 150 micrograms per day of iodine. From the above list, you can see that animal foods are much richer in iodine than plant foods—so how do herbivores (animals which eat a plant-based diet, such as rabbits and deer) get enough iodine? I suspect that there is something about the human diet which interferes with our ability to absorb, utilize, and/or retain iodine, and that this is why we appear to be iodine-deficient compared to other animals. So, what might the possible culprits be? Hmmm….
Blood sugar imbalances are major contributers to the development of hypothyroidism. When our blood sugar gets too high (hyperglycemia) the sugar molecules bind to proteins in the body and create Advanced Glycolytic Enzymes (AGEs) (56). The AGEs destroy cell membrane function and damage insulin receptor activity creating a vicious cycle of elevated blood sugar and inflammatory stress.
One root vegetable that is the exception, and which can negatively impact an underactive thyroid is cassava, a common staple in certain parts of Africa. This plant “is known to produce toxins that can slow an already underactive thyroid,” Dr. Nasr says. But, “that’s not relevant here in the United States, unless you cook cassava and you eat it every day.”
*Cassava bears special mention here. You may have heard of it because it is the starchy root vegetable from which tapioca is made, but cassava is also a popular staple food in many Third World countries, where it is eaten boiled, mashed, or ground into flour. Fresh cassava root contains a harmless substance called linamarin, which can turn into hydrocyanic acid (aka cyanide!) when the plant is damaged or eaten. Flaxseeds also contain linamarin. Cyanide is very toxic, so the human body converts it into thiocyanate (which, although it does interfere with thyroid function, is less toxic than cyanide and easier for the body to eliminate).
Bone broth – Beef and chicken stock contain the amino acids l-proline and l-glycine, which can help repair the digestive lining and improve hypothyroidism. Bone broth also contains numerous important minerals that nourish the digestive tract and prevent deficiencies like calcium, magnesium, phosphorus and silicon. As part of your hypothyroidism diet, bone broth has been shown to help overcome food sensitivities, improve energy and fight fatigue, increase immunity, and lower pain of the muscles and joints.
Many people assume they can treat their hypothyroid condition on their own, without the help of a natural healthcare professional. Some will simply visit their local health food store and try taking some supplements and/or herbal remedies to help cure their condition. The problem is that it usually is not this easy to restore one’s health when dealing with a hypothyroid condition, as while nutritional deficiencies can cause or contribute to a thyroid or autoimmune thyroid condition, there are other factors which can be causing your hypothyroidism condition.
If you have been diagnosed with both hypothyroidism and iodine deficiency, there are some things you can do to make these vegetables less harmful. Cooking them can reduce the effect that cruciferous vegetables have on the thyroid gland, and limiting your intake of these (cooked) vegetables to 5 ounces a day may help as well, since that amount appears to have no adverse effect on thyroid function.
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