Cannabis habit linked to early COPD

IN the UK, tobacco smoking is declining but cannabis smoking is increasing. 

Edinburgh researchers investigated how cannabis smoking affected the respiratory system. In a general practice study of 500 patients, 248 smoked only cigarettes while 252 smoked tobacco and cannabis. More than 90% of the cannabis users smoked it with tobacco. 

A questionnaire found that cannabis smokers had more respiratory symptoms than tobacco smokers. They were significantly more likely to complain of wheezing and coughing up sputum. These symptoms were still significantly

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