Study: 2nd-hand marijuana smoke worse than cigarettes

(KDKA) Secondhand marijuana smoke may damage your blood vessels even more than cigarette smoke.

That's according to a new study from the American Heart Association.

In the study, arteries in rats that inhaled secondhand marijuana smoke for one minute carried blood less efficiently for at least 90 minutes.

Similar exposure to second hand tobacco smoke cause blood vessel impairment for 30 minutes.

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