The most common cause of hypothyroidism worldwide is insufficient intake of iodine, a mineral found in iodized salt and some foods (such as seafood and dairy) that is needed for production of Thyroid Supplements & Weight Loss: What Reddit Says thepafp.org Neuroprotective effects of L carnitine towards oxidative stress and inflammatory processes: a review of its importance as a therapeutic drug in some disorders Metabolic Brain Disease Springer Nature Link Successive thyroid storms treated with L carnitine and low doses of Methimazole The American Journal of Medicine Role of carnitine in disease Nutrition & Metabolism Springer Nature Link