We have been told that Fluoride is good for your teeth and is ok to have in our drinking water. Your metabolism could be altered by drinking fluoride in your water? Your thyroid hormones are unusable due to fluorides effect on iodine, a key mineral that allows your body to utilize Thyroid hormone. This is by definition what hypothyroidism is. Fluoride disrupts certain proteins that are responsible for getting hormones into your cells which is by definition type II diabetes.