Can iodine help with hair loss Iodine, iron, magnesium, and zinc are all essential elements for the proper growth and development in all of the body’s organ and tissue systems. Interestingly enough, lack of iodine is a common sign of hair loss. The thyroid gland uses iodine to make hormones that are necessary to grow healthy hair, teeth, and bones. Being deficient in iodine can lead to hair weakness, or even hair loss. Historically, sheep farmers have understood that iodinepoor soil produces iodine deficient plants, and the sheep that graze on these plants produce the least amount and poorest quality of wool. Considering this,.