Can Thyroid Problems Cause Insomnia?

Yes, thyroid problems can contribute to insomnia and other sleep disturbances, although sleep problems have many possible causes. Both hyperthyroidism and hypothyroidism can disrupt your sleep patterns, though through different mechanisms. Hyperthyroidism speeds up your metabolism, causing anxiety, rapid heartbeat, and difficulty falling asleep. Sleep problems are common in people with hyperthyroidism, although estimates vary depending on the population and how sleep problems are measured. Hypothyroidism is more commonly associated with fatigue and excessive sleepiness, but some people also report poor sleep. Conditions such as sleep apnea or restless legs may contribute and should be assessed separately. Thyroid hormones directly influence your circadian rhythm and body temperature regulation, both critical for healthy sleep. If you're experiencing persistent sleep issues alongside symptoms like weight changes, mood swings, or temperature sensitivity, consider having your thyroid levels checked.