Iodine is an essential element as the body cannot produce it. It has been found that iodine can aid in weight loss as it is needed by the thyroid gland to produce hormones (1).
1 – Wolff, J., & Chaikoff, I. L. (1948). Plasma inorganic iodide as a homeostatic regulator of thyroid function. Journal of Biological Chemistry, 174(2), 555-564.