Fish are a great source of protein, which is critical to maintaining healthy muscles, organs, and blood vessels. Protein helps support cell division, hair growth, and even hormone signaling. It’s used by every system of the body in one way or another.
Fish is also rich in iodine, which is a vital mineral that the body can’t produce on its own. Iodine is important to the function of your thyroid, which controls things like your appetite and your immune system.