Define omission. omission synonyms, omission pronunciation, omission translation, English dictionary definition of omission. n. 1. The act or an instance of omitting. 2. The state of having been omitted. 3. Something omitted or neglected. or n 1. something that has been omitted or...
Causes of heart disease. Heart disease occurs when plaque develops in the arteries and blood vessels that lead to the heart. This blocks important nutrients and oxygen from reaching your heart. Plaque is a waxy substance made up of cholesterol, fatty molecules, and minerals.
For example: 1  Ischaemic heart disease (which causes angina and heart attacks). 2  Heart valve diseases can cause the heart muscle to enlarge which can trigger abnormal electrical activity. 3  High blood pressure (hypertension) can put strain on the heart and cause arrhythmias.