It has been revealed in a recent study by scientists at the University of California, Los Angeles that Cannabis doesn’t pose the same threat as compared to tobacco smoking and one of the main dangers of tobacco use is unrelated to marijuana.

In the journal “Chronic Obstructive Pulmonary Diseases” this month, a study titled “Impact of Marijuana Smoking on COPD Progression in a Cohort of Middle-Aged and Older Persons” was released.


As part of the longitudinal study, the researchers examined groups of individuals who currently, previously, or never smoked marijuana. Many of the topics required longer than four years of study.

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In the study, researchers examined the association between cannabis usage and the onset of COPD in a group of middle-aged and older participants who either smoked tobacco cigarettes or had previously smoked them. They discovered no correlation between cannabis use in the past or the present with the development or progression of COPD.

Image source: sourcerehabcenter

“Neither former nor current marijuana smoking of any lifetime amount was associated with evidence of COPD progression or its development,” the study concluded.

COPD & Cannabis Intake

The term “COPD” refers to a set of lung diseases that make breathing difficult. Smoking-related middle-aged or older persons are more susceptible to the disorder. While medication can help keep the illness under control, respiratory issues tend to get worse over time and can restrict regular activities. The British Lung Foundation estimates that 1.2 million persons in the United Kingdom have COPD.

The National Organisation for the Reform of Marijuana Laws and other marijuana reform advocates applauded the results, noting that they “are consistent with those of prior studies concluding that cannabis inhalation, even over an extended period, is not positively associated with COPD, lung cancer, or irreversible airway damage.”

In a statement, Deputy Director of NORML Paul Armentano noted that the findings “should be reassuring to cannabis consumers and health professionals alike, and they should help to guide future policies concerning the crafting of evidence-based public health messages and associated regulations.”

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