Fluoride in tap water and toothpastes, as well as chlorine in tap water, block iodine receptors in the thyroid gland. Sulfa and antihistamine drugs aggravate iodine uptake by the thyroid.
Fluoride in tap water and toothpastes, as well as chlorine in tap water, block iodine receptors in the thyroid gland. Sulfa and antihistamine drugs aggravate iodine uptake by the thyroid.