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.
Causes. Often the cause of your heart palpitations can't be found. Common causes of heart palpitations include: 1  Strong emotional responses, such as stress or anxiety. 2  Strenuous exercise. 3  Caffeine. 4  Nicotine. 5  Fever. 6  Hormone changes associated with menstruation, pregnancy or menopause. 7  Taking cold and cough medications that contain pseudoephedrine, a stimulant.