About Tobacco One of the most common drugs in use in the United States is nicotine from tobacco. Smoking or chewing tobacco negatively affects overall nutrition and health. Every part of the body is affected. Troubling problems such as a higher risk of developing cardiovascular disease, cancer, and cataracts are linked to smoking.
Smoking also contributes to increased blood pressure.
The toxic minerals cadmium and lead are absorbed in the lungs from cigarette smoke. Smoking has so many harmful effects on a person's health that it has been recognized as the top preventable health problem in the developed world. If you do smoke, quitting can help prevent chronic health problems. Effects on the Digestive System Evidence from research has shown that smoking has harmful effects on the digestive system and is associated with heartburn and peptic ulcers . Smoking also increases the risk of Crohn's disease and may increase a person's risk of gallstones .