is smoking weed as bad for lungs as cigarettes Effects of cannabis on the respiratory system: A state-of-the-art review They compared weed, tobacco and

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6 7 Ideally, globally comparable yearly estimates of tobacco use prevalence and smoking intensity would be available for every country worldwide, but in the absence of such data, sales and implied sales are the most reliable measures available for many research applications

Contact your doctor if the cough worsens or persists beyond a month, or if you notice shortness of breath, wheezing, or blood in your phlegm

These mutations to DNA can result in the development of cancer