How Can Thyroid Cause Heart Palpitations?
February 8, 2024 | by Yashaswi Pathakamuri | Posted in FAQ's
Thyroid dysfunction, particularly hyperthyroidism (an overactive thyroid), can lead to heart palpitations. The thyroid gland plays a crucial role in regulating the body’s metabolism by producing hormones, primarily triiodothyronine (T3) and thyroxine (T4). When the thyroid becomes overactive and produces an excessive amount of these hormones, it can impact various physiological processes, including those related to the cardiovascular system.
Here’s how hyperthyroidism can contribute to heart palpitations:
- Increased metabolic rate: Hyperthyroidism increases the body’s metabolic rate, which can lead to an elevation in heart rate. The heart has to pump more blood to meet the increased demand for oxygen and nutrients in the tissues. This increased workload on the heart can result in palpitations or a sensation of rapid or irregular heartbeat.
- Direct effect on the heart: Thyroid hormones have a direct effect on the heart muscle cells and the electrical conduction system that regulates the heartbeat. Elevated levels of thyroid hormones can enhance the sensitivity of the heart to adrenaline (a hormone that increases heart rate) and alter the normal electrical signaling in the heart, potentially leading to palpitations.
- Reduced ability to tolerate stress: Hyperthyroidism can make the heart more sensitive to factors that increase stress, such as anxiety, emotional stress, or physical exertion. This heightened sensitivity can contribute to palpitations, especially during stressful situations.
- Arrhythmias: In some cases, hyperthyroidism can increase the risk of developing certain heart rhythm disturbances or arrhythmias. These abnormal heart rhythms can cause palpitations, along with other symptoms such as dizziness and fainting.
It’s important to note that not everyone with hyperthyroidism will experience heart palpitations, and the severity of symptoms can vary. Other common symptoms of hyperthyroidism include weight loss, increased appetite, heat intolerance, tremors, anxiety, and fatigue.
If you are experiencing heart palpitations or suspect you have thyroid-related issues, it is crucial to seek medical attention. A healthcare professional can perform thyroid function tests and assess your overall health to determine the appropriate treatment, which may include medications to regulate thyroid function or other interventions based on the underlying cause. Managing thyroid dysfunction effectively can help alleviate symptoms, including heart palpitations.
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