I am writing to say that I am beginning the diet again after having stopped due to total exhaustion. I learned last week when I got the results of the blood tests that the cause is low thyroid and adrenal functions. I was given some medication and supplements which are working quite well. I feel better than I have for a long, long, time.
I also really want to say how much I appreciate what I'm learning on this thread. I knew, but my doctor did not know, that cruciferous vegetables interfere with thyroid function. I gave him the benefit of the doubt, and juiced and drank a glass of liquified cauliflower and broccoli. What a mistake! I had the worst case of brain fog ever. I couldn't remember anything, and I could barely walk hermy legs felt like lead.
In his defense, he is treating me for cancer in a roundabout way by strengthening the thyroid. There seems to be a lot of literature about the benefits of eating cruciferous vegetables to prevent cancer. This may be so, but they're hell on the thyroid.
If I hadn't already known about the effects this class of vegetables have on the thyroid, I probably would have continued juicing thinking that it would get better over time.
I hope I can do better on the diet this time around. The thyroid extract is really, really helping.
What are goitrogens and in which foods are they found?
Goitrogens are naturally-occurring substances that can interfere with function of the thyroid gland. Goitrogens get their name from the term "goiter," which means an enlargement of the thyroid gland. If the thyroid gland is having difficulty making thyroid hormone, it may enlarge as a way of trying to compensate for this inadequate hormone production. "Goitrogens," like circumstances that cause goiter, cause difficulty for the thyroid in making its hormone.
Foods that contain goitrogenshttp://www.whfoods.com/genpage.php?tname=george&dbid=47
There are two general categories of foods that have been associated with disrupted thyroid hormone production in humans: soybean-related foods and cruciferous vegetables. In addition, there are a few other foods not included in these categories - such as peaches, strawberries and millet - that also contain goitrogens. The table below shows a list of some foods that contain goitrogens.
Included in the category of soybean-related foods are soybeans themselves as well as soy extracts, and foods made from soy, including tofu and tempeh. While soy foods share many common ingredients, it is the isoflavones in soy that have been associated with decreased thyroid hormone output. Isoflavones are naturally-occurring substances that belong to the flavonoid family of nutrients. Flavonoids, found in virtually all plants, are pigments that give plants their amazing array of colors. Most research studies in the health sciences have focused on the beneficial properties of flavonoids, and these naturally-occurring phytonutrients have repeatedly been shown to be highly health-supportive.
The link between isoflavones and decreased thyroid function is, in fact, one of the few areas in which flavonoid intake has called into question as problematic. Isoflavones like genistein appear to reduce thyroid hormone output by blocking activity of an enzyme called thyroid peroxidase. This enzyme is responsible for adding iodine onto the thyroid hormones. (Thyroid hormones must typically have three or four iodine atoms added on to their structure in order to function properly.)
A second category of foods associated with disrupted thyroid hormone production is the cruciferous food family. Foods belonging to this family are called "crucifers," and include broccoli, cauliflower, Brussels sprouts, cabbage, mustard, rutabagas, kohlrabi, and turnips. Isothiocyanates are the category of substances in crucifers that have been associated with decreased thyroid function. Like the isoflavones, isothiocyanates appear to reduce thyroid function by blocking thyroid peroxidase, and also by disrupting messages that are sent across the membranes of thyroid cells.
Examples of foods that contain goitrogens
Cruciferous vegetables including:
Soybean and soy products, including tofu