14. Intolerance to Cold (Hypothyroidism)

During metabolism, heat is produced when the body converts calories into energy, a process regulated by thyroid hormone. When low levels of thyroid hormone are produced, the body’s metabolic processes slow down, resulting in a decrease in the amount of heat that is normally produced. Because of this, patients with hypothyroidism find it difficult to maintain body heat in cold weather, making them more sensitive to lower temperatures that usual.