Heart palpitations are a feeling that your heart is beating too hard or too fast, skipping a beat, or fluttering. You may notice heart palpitations in your chest, throat, or neck.
Heart palpitations can be bothersome or frightening. They usually aren't serious or harmful, though, and often go away on their own. Most of the time, they're related to stress and anxiety or to consumption of stimulants such as caffeine, nicotine, or alcohol. Palpitations also often occur during pregnancy.
A person's risk of heart attack greatly increases with the number of cigarettes he or she smokes. Smokers continue to increase their risk of heart attack the longer they smoke, as well. People who smoke a pack of cigarettes a day have more than twice the risk of heart attack than non-smokers. Women who smoke and also take birth control pills increase several times their risk of heart attack, stroke, blood clots, and peripheral vascular disease.
Cigarette smoke not only affects smokers. When you smoke, the people around you are also at risk for developing health problems, especially children. Environmental tobacco smoke (also called passive smoke or secondhand smoke) affects people who are frequently around smokers. Secondhand smoke can cause chronic respiratory conditions, cancer, and heart disease. It is estimated that around 35,000 nonsmokers die from heart disease each year as a result of exposure to environmental tobacco smoke.