Many people with type 1 diabetes (T1D) have hypothyroidism.(1) Additionally, females are more likely to have hypothyroidism than males due to many possible factors, such as hormones, that are not well-understood.(1–4) Diabetes and hypothyroidism are both hormone disorders.(5,6) Hormones are chemical messengers that flow through your bloodstream to tissues or organs and have many different slow-acting effects on the body.(7) Insulin hormone (related to diabetes), thyroid hormo