Dietary opinion is that all goiterogons can affect thyroid function ... a little bit ... however many are packed with things that your body needs. Strawberries are rich in selenium which helps you convert T4 into T3 (levothyroxine tablets, if prescribed, give you the T4 and you need to convert it to T3 when you need to use it). I don't cut out foods that I like without strong scientific evidence based reasons! This US article is on the same lines though I'd be careful of any commercial implications in what it promotes!
Goitrogens impede the uptake of iodine by the thyroid gland. But, not all goitrogens affect everybody. If you feel bad after eating something, you stop eating it, that's only common sense. Otherwise, carry on eating it, whether it's a goitrogen or not.
However, if you have had your gland removed, or killed by Hashi's, or you are on a complete replacement dose of thyroid hormones, goitrogens aren't going to affect you at all, because you don't rely on your thyroid for any of your hormone.
The only exception to this, is unfermented soy, which also acts at a cellular level, impeding the uptake of hormone by the cell, and therefore affecting your thyroid hormone replacement.
Tdennehy , if drinking your smoothied kale has no adverse effects on you, carry on. I think it contains more available nutrients than spinach - which is also a goitrogen, by the way. As are cabbage and strawberries. In fact, it's more like a goitrogen smoothie! lol But, if you don't feel bad just after drinking it, then carry on.
Thanks greygoose. I've avoid soy priducts such as soy milk since I attended my first thyroid group meeting and was warned. Having switched to soy milk about a year before being diagnosed as low thyroid, I was guilty of consuming for the health benefits without reading the potential problems I might cause myself. I was probably low throid for years before as my mum said I was always 1 degree (fahrenheit) under as a child.... not proof but maybe a clue. The fremented soy being OK was news to me though!
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