Parents’ second-hand marijuana smoke may cause colds in children



Man smoking a cannabis cigarette

Smoke from hashish could also be dangerous to others

THOMAS SAMSON/AFP through Getty Photographs

Kids whose dad and mom smoke or vape hashish seem to get barely extra respiratory infections, similar to colds and flu, than these whose dad and mom simply smoke tobacco or don’t smoke in any respect.

The impact might come from youngsters inhaling second-hand marijuana smoke, says Adam Johnson at Wake Forest Faculty of Medication in North Carolina. “It could make any [respiratory] virus extra symptomatic as a result of you’ve gotten a baby’s lungs being uncovered to irritants.”

Kids who breathe in second-hand tobacco smoke are identified to have extra respiratory diseases, similar to bronchial asthma, which has led some nations to ban individuals from smoking in automobiles with youngsters current. However the results of hashish smoke publicity are much less studied, particularly as individuals are inclined to smoke fewer marijuana cigarettes per day than they do tobacco cigarettes.

The brand new research was executed in Colorado, the place hashish was legalised recreationally in 2014. Johnson’s group surveyed 1500 dad and mom of youngsters attending a hospital’s paediatric emergency division for any motive. About 10 per cent of the caregivers smoked or vaped marijuana, whereas half of these used solely marijuana and never tobacco.


Mother and father had been requested about numerous diseases their youngsters had had up to now 12 months. Kids whose dad and mom smoked or vaped marijuana had a median of 1.three viral respiratory infections in that point, whereas those that by no means smoked and people who solely smoked tobacco had about 1 per 12 months.

There was no important distinction within the variety of bronchial asthma exacerbations between any of the teams – this will have been as a result of they occurred at very low charges, of solely about 0.2 such incidents per little one on common over the 12 months, says the group.

The research doesn’t show that hashish smoke brought about the infections, because it wasn’t a randomised trial, though the thought is believable, says Johnson. Counting on dad and mom’ reminiscence of diseases slightly than medical information is also a limitation.

Analysis into whether or not second-hand tobacco smoke is linked with in poor health well being might be sophisticated by the truth that poorer individuals are inclined to smoke extra, so decrease revenue may be the actual explanation for any diseases. However on this research, smoking or vaping marijuana and never tobacco was linked with larger revenue and academic ranges than common.

Journal reference: Pediatric Analysis, DOI: 10.1038/s41390-021-01641-0

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