Can high cholesterol cause a stroke?

Cholesterol-related plaque can build up in arteries in the neck or brain circulation. This may reduce blood flow or provide a surface where a clot forms and travels to a brain artery. A blocked artery can cause an ischaemic stroke. Other strokes happen because a blood vessel bleeds, so high cholesterol does not explain every stroke. High cholesterol often causes no symptoms, which is why routine risk assessment matters even when you feel well.

Discuss your cholesterol result with a clinician, who can consider blood pressure, diabetes, smoking, family history and previous vascular problems. Follow the agreed plan for food, activity, smoking cessation and prescribed medicines. Keep regular appointments so treatment can be adjusted safely. Never use a cholesterol result to explain away sudden neurological symptoms.

Call emergency services immediately for sudden facial drooping, weakness or numbness on one side, trouble speaking or understanding, new vision loss, severe imbalance or a sudden severe headache. Note when the person was last known to be well. Symptoms that improve can still represent a transient event and need urgent assessment.

Ask what your cholesterol pattern means, whether you need treatment, and how it fits with your blood pressure and glucose results. Ask which stroke warning signs your household should recognise and what action to take.