Principle objective of this lecture is to Presentation on Bad Effects of Smoking. Smoking increases risk of having a stroke by no less than 50%, which can trigger brain damage and early death. And, by smoking, you double your risk of dying at a stroke. Smoking damages heart and blood circulation, increasing the chance of conditions such as center disease, heart attack, cerebrovascular event, peripheral vascular disease. Smoking reduces how much oxygen that gets on your skin. The good news is that when you stop smoking, your health improves and your body are going to recover.