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Health Effects of Smoking

By , About.com Guide

Updated December 18, 2012

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The effects of smoking on the body include more than the well-known risk of developing lung cancer. They involve every organ in the body and can range from emphysema to infertility, and from poor healing to difficulty controlling pain. Smoking is the leading preventable cause of death in the United States. What are some of the other effects of smoking on the body?

Cancer

The association between smoking and lung cancer is well-known, with smoking being the cause of 80 to 90% of lung cancers. But smoking contributes to the risk of several other cancers as well. Smoking is either the direct cause or a contributing factor in 30% of cancers. These include:
  • Pancreatic cancer - It is thought that smoking is responsible for 30% of pancreatic cancers.
  • Bladder Cancer - Smoking increases the risk of developing bladder cancer 5-fold.
  • Head and Neck Cancers - Smoking can cause cancers of the mouth, tongue, larynx, and pharynx.
  • Skin Cancer - People who smoke have triple the risk of developing squamous cell skin cancer.
  • Esophageal Cancer
  • Colon Cancer - It is thought that smoking is responsible for 12% of fatal colon cancers.
  • Stomach Cancer
  • Kidney Cancer
  • Acute Myeloid Leukemia
  • Cervical Cancer - Smoking can accelerate cancerous changes in the cervix due to HPV.
  • Ovarian Cancer
  • Breast Cancer - Mounting evidence suggests a link between smoking and breast cancer.
  • Prostate Cancer - New studies are also suggesting a possible link between smoking and prostate cancer.
  • Childhood Cancers - For mothers who smoke while pregnant, the risk of childhood cancers, such as retinoblastoma, may be higher in their offspring.

For people who already have cancer, smoking may lower survival and make treatments less effective.

Heart Disease and Blood Vessels

Smoking can cause coronary artery disease and strokes, the first and third leading causes of death in the United States, respectively.

Lung Disease

Smoking can cause direct damage to lung tissue and introduce irritants that can result in airways spasms.

Bones and Joints

Smoking can lead to thin bones and the risk of fracture, and affects joints and related tissues as well.

Infertility, Pregnancy, and Breastfeeding

Smoking can lower the chances of becoming pregnant, increase the risk of miscarriage, result in premature births, and increase the risk of sudden infant death syndrome.

Other Health Effects of Smoking

Mental Health

In addition to being an addiction, smoking can have effects on mental health:

Cosmetic

Some effects of smoking may not be life-threatening, but they can certainly be annoying:

Lifespan

Smoking shortens life by an average of 10 years. That amounts to 12% of the average lifespan in the United States.

Time to Quit

There are clearly a multitude of good reasons to quit smoking, and help is available. Our About.com Guide to Smoking Cessation has been there, and has some excellent tips:

Sources:

CDC. Smoking and Tobacco Use. Health Effects of Cigarette Smoking. Updated 12/01/09. http://www.cdc.gov/tobacco/data_statistics/fact_sheets/health_effects/effects_cig_smoking/

CDC. Smoking And Tobacco Use. 2004 Surgeon General’s Report – The Health Consequences of Smoking. Accessed 04/05/10. http://www.cdc.gov/tobacco/data_statistics/sgr/2004/complete_report/index.htm

Stavrou, E. et al. Maternal smoking during pregnancy and childhood cancer in New South Wales: a record linkage investigation. Cancer Causes and Control. 2009. 20(9):1551-8.

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