No matter how long you have used tobacco, quitting can reduce your risk for cancer and other chronic diseases. Many people who use tobacco become addicted to nicotine, a drug found naturally in tobacco. This can make it hard to quit using tobacco. Most people who use tobacco try to quit several times before they succeed. There are proven steps that can help you quit. For more information about quitting tobacco use, go to smokefree.
Smoke from cigarettes, cigars, and pipes has at least 70 chemicals that can cause cancer. Every time you breathe in that smoke, those chemicals get into your bloodstream, which carries the chemicals to all parts of your body.
Many of these chemicals can damage your DNA, which controls how your body makes new cells and directs each kind of cell to do what it is made for. Damaged DNA can make cells grow differently from how they are supposed to. Childhood Cancer Genomics. Study Findings. Metastatic Cancer Research. Intramural Research. Extramural Research. Cancer Research Workforce. Partners in Cancer Research. What Are Cancer Research Studies. Research Studies. Get Involved. Cancer Biology Research.
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When cigar tobacco is smoked, these compounds give off several tobacco-specific nitrosamines TSNAs , some of the most potent cancer-causing substances known. This results in higher concentrations of nitrogen oxides, ammonia, carbon monoxide, and tar — all very harmful substances.
To learn more, see Health Risks of Smoking Tobacco. The main smokeless tobacco products in the United States are snuff and chewing tobacco , which are put into the mouth or nose but are not burned like cigarettes or cigars. Smokeless tobacco products contain a variety of potentially harmful chemicals, including high levels of TSNAs. There are also other cancer-causing agents in smokeless tobacco, such as polonium a radioactive element and other polycyclic aromatic hydrocarbons PAHs.
These carcinogens are absorbed through the mouth and may be why several types of cancer are linked to the use of smokeless tobacco. It was first used in Sweden and Norway, but it is now available in the United States as well. Snus generally has lower levels of nicotine and TSNAs than traditional moist snuff brands, but it can still be addictive and has been linked to some types of cancer.
Get the facts about nicotine, flavorings, colorings and other chemicals found in e-cigarettes. Find out more. Make a Donation Your tax-deductible donation funds lung disease and lung cancer research, new treatments, lung health education, and more. Make a Donation. Sign Up for Email Updates Join over , people who receive the latest news about lung health, including COVID, research, air quality, inspiring stories and resources. Please enter a valid email address.
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