Could Anaemia Or A Thyroid Problem Be Causing Your Heart Palpitations?

 

Many people assume that heart palpitations automatically point to a heart problem.

In reality, some of the most common causes originate elsewhere in the body. Two frequent culprits are anaemia and thyroid disorders, both of which can significantly affect heart rhythm.

How Does Anaemia Cause Palpitations?

Anaemia occurs when there aren't enough healthy red blood cells to carry oxygen efficiently around the body.

To compensate, the heart often works harder by:

  • Beating faster

  • Pumping more forcefully

  • Increasing overall circulation

This can lead to symptoms such as:

  • A racing heartbeat

  • Pounding sensations in the chest

  • Shortness of breath

  • Fatigue

Even low iron levels without full anaemia can sometimes contribute to palpitations.

How Does The Thyroid Affect The Heart?

The thyroid gland plays a major role in regulating metabolism.

When thyroid hormone levels become too high, the heart may become overly sensitive to adrenaline, leading to:

  • Rapid heartbeats

  • Ectopic beats

  • Fluttering sensations

  • Increased risk of atrial fibrillation

An underactive thyroid is more commonly associated with a slower pulse but can still influence heart rhythm.

What Symptoms Help Differentiate The Cause?

Doctors often look for accompanying symptoms.

Anaemia may cause:

  • Tiredness

  • Pale skin

  • Breathlessness

  • Weakness

Thyroid problems may cause:

  • Weight changes

  • Heat intolerance

  • Tremors

  • Restlessness

The Bottom Line

Blood tests are often one of the first investigations for palpitations because they can quickly identify anaemia or thyroid dysfunction. Treating the underlying cause frequently leads to significant improvement in heart rhythm symptoms.

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