Hello – I don’t know if you are being treated for hypER or hypO. If you still have some thyroid function, foods like broccoli and Brussels sprouts are referred to as “goitrogens”, as they can block the thyroid gland’s ability to use iodine.
It is believed that you would have to consume a large amount of these vegetables in a raw state to make a difference…but with juicing, you might consume enough to have an impact.
This would just be something to be aware of if you notice a change in symptoms once you get into the juicing process.