atherosclerosis By Ivan Suarez Robles 13 Nov, 2010 The clogging, narrowing, and hardening of blood vessels that can lead to stroke, heart attack, and kidney problems.Related Articles: Glossary: low-density lipoprotein (LDL) cholesterolGlossary: low-density lipoproteins (LDL) Cholesterol and Huntington's DiseaseStress and Huntington's DiseaseGlossary: high-density lipoprotein (HDL) cholesterol