Thyroid and Your Heart Rhythm

Thyroid and Your Heart Rhythm

Your thyroid gland (a small butterfly-shaped gland in your neck) makes hormones that affect how your body uses energy. These hormones also have a big effect on your heart rate and rhythm.

 

Overactive Thyroid (Hyperthyroidism)

When your thyroid makes too much hormone:

• Your heart may beat too fast (racing heartbeat).
• You may feel palpitations (fluttering or pounding in the chest).
• It can trigger irregular rhythms, especially atrial fibrillation (AF), which increases the risk of stroke.
• Symptoms: anxiety, sweating, weight loss, feeling hot.

 

Underactive Thyroid (Hypothyroidism)

When your thyroid makes too little hormone:

• Your heart may beat too slowly.
• You may feel tired, weak, or dizzy.
• In severe cases, fluid can build up around the heart.
• Symptoms: weight gain, feeling cold, dry skin, constipation.

 

Why It Matters

• Thyroid problems are treatable, and fixing them often improves heart rhythm.
• If you have an irregular heartbeat, your doctor may order thyroid blood tests.
• Treating the thyroid condition may prevent long-term heart problems.

 

✅What You Can Do

• Take thyroid medication as prescribed.
• Keep regular check-ups with your doctor.
• Report symptoms like fluttering, dizziness, chest pain, or shortness of breath.
• Maintain a heart-healthy lifestyle: no smoking, regular exercise, balanced diet.

 

Remember: Looking after your thyroid helps protect your heart.