2013 Update in addiction medicine for the generalist.

Addict Sci Clin Pract · 2013 · PMC3819258 · PMID 24499640

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a nonsignificant trendno p-value reported

Light marijuana use was associated with increases in both FEV1 and FVC, but there was a nonsignificant trend towards decreased FEV1 with higher levels of use, indicating a possible negative effect of marijuana use on pulmonary function at high levels of intake.

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