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High cholesterol
  • High cholesterol is when you have too much of a fatty substance called cholesterol in your blood.
  • You're more likely to get high cholesterol if you're over 50, a man, you've been through the menopause, or you're of South Asian or sub-Saharan African origin. It can also run in families.
  • It can also be caused by eating fatty food, not exercising enough, being overweight, smoking and drinking alcohol.
  • You can lower your cholesterol by eating healthily and getting more exercise. Some people also need to take medicine.
  • Too much cholesterol can block your blood vessels. It makes you more likely to have heart problems or a stroke.
  • High cholesterol does not usually cause symptoms. You can only find out if you have it from a blood test.

HEART UK has information about inherited high cholesterol that starts at a young age (familial hypercholesterolaemia).

Find out about familial hypercholesterolaemia on the HEART UK website

Last Reviewed
20 March 2026
NHS websiteNHS website