How does smoking damage your heart?
Smoking damages your arteries. The build-up of fatty material starts to narrow the artery and restricts blood flow to your heart which can cause a heart attack or a stroke.
Tobacco smoke produces carbon monoxide which reduces the amount of oxygen in your blood.
The nicotine in cigarettes causes your body to produce adrenaline. This in turn makes your heart beat faster and increases your blood pressure – working your heart harder.