Iodine is a small mineral with a big job. Your body needs iodine to produce thyroid hormones, which help regulate your metabolism, energy levels, body temperature, and support normal growth and development. Not getting enough iodine can contribute to tiredness, feeling sluggish, brain fog, feeling cold, and other symptoms associated with reduced thyroid hormone production. If you've been struggling with fatigue, it's worth remembering that your thyroid needs the right nutrients to function norma