Exposure to tobacco smoke quickly damages blood vessels throughout the body and increases the risk of blood clots.

The chemicals in tobacco smoke damage the delicate lining of the lungs and can cause permanent damage that reduces the lungs’ ability to exchange air effectively.

How does tobacco use affect the human body?

Smoking tobacco damages the heart and blood vessels (cardiovascular system), increasing the risk of heart disease and stroke. It is the main cause of coronary artery disease, which can lead to a heart attack. Smoking causes high blood pressure, reduces your ability to exercise, and increases the risk of blood clots.

How long does it take to cause harm?

Smoking for less than a week can interfere with your lungs. It doesn’t take long for the effects of smoking to harm the body. In fact, it only takes five to seven days. Because cigarettes fill your lungs with dangerous chemicals, your lungs cannot fully recover.

How do the chemicals in cigarettes affect the body?

Smoking can damage the heart, blood vessels and blood cells. The chemicals and tars in cigarettes may increase the risk of atherosclerosis in humans, which is the buildup of plaque in the blood vessels. This buildup restricts blood flow and can lead to dangerous blockages.


How does tobacco affect the digestive system?

Smoking contributes to many common digestive system disorders, such as heartburn and gastroesophageal reflux disease (GERD), peptic ulcers, and some liver diseases. Smoking increases the risk of Crohn’s disease, colon polyps and pancreatitis and may increase the risk of gallstones.