23 Symptoms That Could Indicate Hyperthyroidism

3. An Irregular Heartbeat

Overproduction of thyroid hormones affects the heart’s function in many ways. Hyperthyroidism may cause abnormal heart rhythm, the sensation of an irregular heartbeat, or a fast heart rate. Certain medications prescribed for thyroid function may also cause an irregular heartbeat or other undesirable side effects. Beta blockers are designed to slow down heart rate and reduce anxiety but may produce feelings of depression, fatigue, and the inability to concentrate in people with an overactive thyroid.

4. Lighter And Less Frequent Menstrual Periods

Having an irregular menstrual period might not seem ideal, but it’s an excellent way to predict how well a woman’s thyroid is functioning. Whereas an underactive thyroid may cause a heavier flow more often with more severe cramps, hyperthyroidism may cause shorter and lighter periods. Periods may also be farther apart due to high levels of thyroid hormones, which can make conceiving a bit trickier. Thyroid problems may also cause a decreased interest in sex.