Hey there, I answered your questions about grapefruits on a previous post. In regards to your thyroid, or lack there of, then there would be no natural hormone production. I'm assuming you are taking thyroid medication? If so, take the hormones as your Dr. prescribed (usually on an empty stomach at different times than meals) and limit or avoid foods that may interfere with absorption (soy and calcium supplements; and keeping fiber consistent). The goitrogens in these leafy greens disrupt natural hormone production. Some doctors feel it is ok for patients with underactive thyroid on thyroid medications to consume these foods while others say to limit them. In your situation, the thyroid is not functioning so the goitrogens would not further damage the glands. Therefore, these goitrogenic foods should be safe to consume. However, please consult w/ a dietitian or Dr. that knows more specifics about your health history for confirmation. If you wish to avoid them, there are several other options for ingredients to put in your NutriBlasts if you want to avoid these cruciferous veggies and they are noted at the end of this article along with two recipes you could try! http://www.nutriliving.com/blog/blasting-thyroid-health Also a quick google search can help you find several more non-goitrogenic foods to toss in your Blast.