5. Fatigue
Low heart rate isn’t the only cause of fatigue or tiredness in people with iodine deficiency. Since the main function of iodine in our bodies is a key component of our thyroid hormones, people who don’t take enough iodine in their diets will have metabolic problems. Basically, the more thyroid hormone we release, the faster our body burns calories and converts the molecules of the food that we eat and the oxygen that we breathe into useful products for our body, releasing energy.
This energy will later be used for all the functions of our different systems. When we don’t have enough iodine, we produce fewer thyroid hormones, and the metabolic rate in our body decreases as a result. With less energy released from glucose, fat and other molecules, we feel more tired and fatigued, even if we do get as much rest as we need at night.