Those who consume a bevy of seafood, seaweed, and iodized salt experience high iodine levels. These iodine levels have also been purported to trigger acne flare ups. Word spread about iodine’s potential for causing skin issues in the 1960s, and it’s had a bad rap ever since. However, recent studies have fought against this pervasive thought, as some studies have seen no difference between acne in those who were given iodine and those who weren’t. It’s important to take these studies with a grain of salt, and understand that depleting your diet of iodine can have negative effects on holistic health. Iodine is essential for proper thyroid function, and is responsible for the manufacture of T3 and T4 thyroid hormones and it’s important to maintain proper levels of iodine in your diet.
This article was medically reviewed by Hilary Baldwin, MD. Baldwin, medical director of the Acne Treatment Research Center, is a board-certified dermatologist with nearly 25 years of experience. Her area of expertise and interest are acne, rosacea and keloid scars. Baldwin received her BA and MA in biology from Boston University. She became a research assistant at Harvard University before attending Boston University School of Medicine. She then completed a medical internship at Yale New Haven Hospital before becoming a resident and chief resident in dermatology at New York University Medical Center.
No one factor causes acne. Acne occurs when sebaceous (oil) glands attached to the hair follicles are stimulated at the time of puberty or due to other hormonal changes. Sebum (oil) is a natural substance that lubricates and protects the skin. Associated with increased oil production is a change in the manner in which the skin cells mature, predisposing them to plug the follicular pore. The plug can appear as a whitehead if it is covered by a thin layer of skin, or if exposed to the air, the darker exposed portion of the plug is called a "blackhead." The plugged hair follicle gradually enlarges, producing a bump. As the follicle enlarges, the wall may rupture, allowing irritating substances and normal skin bacteria access into the deeper layers of the skin, ultimately producing inflammation. Inflammation near the skin's surface produces a pustule; deeper inflammation results in a papule (pimple); if the inflammation is deeper still, it forms a cyst.