Scallops are rich in iodine. Iodine is an important mineral for our bodies.  Iodine is used by the body to make hormones in your thyroid. Fluorine and chlorine compete with iodine in your thyroid because they’re a similar enough molecule. Both fluorine and chlorine are toxic to our cells, meaning they damage the cells function. If there is not enough iodine in your cells, your body will quickly uptake whatever it can find that’s closest - meaning fluorine and chlorine. Being well nourished and having enough iodine will prevent your body from trying to use fluorine or chlorine in your thyroid.