26/07/2026
❤️ HOW THYROID CONDITIONS AFFECT THE HEART
Thyroid disease can disrupt the normal functioning of several body systems. Among the most serious complications are those affecting the heart.
In fact, thyroid disease is a common and treatable cause of cardiovascular problems. Anyone experiencing unexplained cardiac symptoms should have their thyroid function checked. If a thyroid disorder is diagnosed, appropriate treatment is essential.
Thyroid disease affects the heart primarily through either:
🔹 Too little thyroid hormone — Hypothyroidism🔹 Too much thyroid hormone — Hyperthyroidism
Both conditions are common and can significantly affect the cardiovascular system.
For people who already have heart disease, a thyroid disorder can worsen existing symptoms, trigger new cardiac problems, or accelerate the progression of the underlying heart condition. In some cases, thyroid disease can even cause new heart problems in people with previously healthy hearts.
This is why early diagnosis and proper treatment of thyroid disease are so important.
💙 COMMON HEART PROBLEMS ASSOCIATED WITH HYPOTHYROIDISM
1️⃣ Shortness of breath (Dyspnea)
A person may experience difficulty breathing, especially during physical activity.
2️⃣ Slow heart rate (Bradycardia)
The heart may beat more slowly than normal.
3️⃣ Worsening or new-onset heart failure
Hypothyroidism can worsen previously controlled heart failure and, in some cases, contribute to the development of heart failure in people with underlying heart disease.
4️⃣ Swelling (Edema)
Fluid retention can cause swelling, particularly in the legs, ankles, and feet.
5️⃣ Worsening of coronary artery disease (CAD)
Hypothyroidism can contribute to changes in cholesterol levels and other factors that may worsen coronary artery disease.
⚠️ Important: Hypothyroidism often develops gradually. Its symptoms may be subtle and can easily be mistaken for normal tiredness, ageing, or other health conditions.
❤️ COMMON HEART PROBLEMS ASSOCIATED WITH HYPERTHYroidism
1️⃣ Fast heart rate and palpitations (Tachycardia)
The heart may beat unusually fast, and a person may feel pounding, racing, or irregular heartbeats.
2️⃣ Systolic hypertension
The increased force of the heart's contractions can raise the systolic blood pressure—the pressure in the arteries when the heart contracts.
3️⃣ Shortness of breath with mild exertion
This may result from muscle weakness associated with hyperthyroidism or from worsening heart failure.
4️⃣ Worsening angina
Hyperthyroidism can increase the workload and oxygen demand of the heart, potentially worsening chest pain in people with coronary artery disease.
⚠️ PLEASE NOTE:
Like hypothyroidism, hyperthyroidism does not always present with the classic textbook symptoms.
Therefore, anyone experiencing unexplained symptoms such as:
❤️ Persistent palpitations❤️ An unusually fast or slow heartbeat❤️ Shortness of breath❤️ Unexplained swelling❤️ Chest pain or worsening angina❤️ Unexplained fatigue or reduced exercise tolerance
should speak with a healthcare professional and consider having their thyroid function assessed.
🦋 Your thyroid may be small, but its impact on your heart can be significant.
Early diagnosis, appropriate treatment, and regular monitoring can help protect both your thyroid and your heart.
✍️ ThyroidQueen 👑
©️ TASI (2026)📧 [email protected]
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