Marijuana habit not linked to lung cancer – The Oncology Report

“Regular cannabis smokers are no more likely to develop lung cancer than are people who indulge occasionally.

The finding of no significant increased risk held true whether the smokers imbibed once or twice – or more – each day, and regardless of how many years they had smoked, Dr. Li Rita Zhang reported at the annual meeting of the American Association of Cancer Research.

The study included data from six case-control studies conducted from 1999 to 2012 in the United States, Canada, the United Kingdom, and New Zealand, with a subject pool of 2,159 lung cancer cases and 2,985 controls. All of the studies were part of the International Lung Cancer Consortium (ILCCO), an international group of lung cancer researchers with the aim of sharing comparable data from ongoing and recently completed lung cancer studies from different geographical areas and ethnicities.


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