Heart palpitations and vitamin deficiency

Low iron can reduce oxygen delivery and lead to a faster or more noticeable heartbeat; iron-deficiency anaemia and anaemia may therefore present with palpitations. Low levels of some vitamins or minerals can also affect nerve and muscle function, although symptoms alone cannot identify which nutrient is involved. Dehydration, low blood sugar, thyroid overactivity, stress, medicines and an irregular rhythm such as atrial fibrillation are other possibilities.

Arrange a primary-care assessment if the sensation is new, recurrent or accompanied by tiredness, breathlessness or dizziness. Note when it starts, how long it lasts, whether the rhythm feels regular or uneven, and any supplements or medicines you take. A clinician may review your diet and bleeding history, check your pulse and arrange blood tests or an electrocardiogram. Do not start high-dose supplements without advice, because the right treatment depends on the confirmed deficiency.

Seek emergency help for palpitations with chest pain, severe breathlessness, fainting, collapse or new confusion. Obtain urgent medical advice if the heartbeat remains very fast or irregular, or if you feel markedly unwell. These warning signs require assessment regardless of whether a deficiency seems possible.

Ask whether your symptoms warrant an electrocardiogram, which blood tests could look for anaemia or nutrient problems, and whether any current supplement could be contributing. Ask how to replace a confirmed deficiency safely and when exercise or follow-up should resume.