Menu Healthy Lifestyle Diseases & Conditions First Aid Symptoms Tests & Procedures Videos Definitions FAQs HypercholesterolemiaUpdated: 2017-06-13OverviewHigh cholesterol (hypercholesterolemia) is high amounts of the waxy substance (cholesterol) found in fats in the blood. It can limit blood flow, increasing risk of heart attack or stroke.SymptomsThere are no symptoms. It's detected by a blood test.TreatmentsTreatments include medications, a healthy diet, and exercise. © 1998-2022 Mayo Foundation for Medical Education and Research(MFMER). All rights reserved. Terms of Use