Iodine hair loss benefits and food sources Feb 24, 2010 1:18:54 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Mod on Feb 24, 2010 1:18:54 GMT -5 Helps regulate thyroid hormones and prevents dry hair and hair loss. Daily dose: 150 mcg. Food sources: Fish, seaweed, kelp, iodized salt, garlic.