Smoking DOES cause receding gums.
More Info: Receding gums are a symptom of advanced gum disease called periodontitis. Smoking has been determined to be a major risk factor in the development of periodontitis, responsible for more than fifty percent of cases in American adults.
Causes of Receding Gums
Tartar and plaque commonly build up at the base of teeth around the gum line. Routine dental care removes this buildup before it becomes a problem. If left untreated, tartar and plaque can lead to gingivitis and ultimately periodontitis, which is the primary cause of adult tooth loss.
Receding Gums Are Preventable
As smoking is a major risk factor in developing periodontitis, a large portion of the periodontitis cases presenting in the adult population in the United States could be prevented simply through the cessation of smoking and chewing tobacco.
Tomar, SL, and S Asma. “Smoking-attributable periodontitis in the United States: findings from NHANES III. National Health and Nutrition Examination Survey..” Journal of Perodontology 71.5 (2000): 743-751. Print.
“Periodontitis: MedlinePlus Medical Encyclopedia.” National Library of Medicine – National Institutes of Health. N.p., n.d. Web. 30 July 2012. <http://www.nlm.nih.gov/medlineplus/ency/article/001059.htm>