Second Hand Pot Smoke More Dangerous Than Cigarettes?

According to a new study, secondhand marijuana smoke may be worse than tobacco smoke. A study out of California found that arteries in rats contracted for about 90 minutes when exposed to second hand marijuana smoke, three times longer than when the rats were exposed to tobacco smoke. Contracted arteries can ultimately become damaged and cause blood clots, heart attacks or stroke. There are other issues affecting the potency of second hand marijuana smoke as well, as the plant may contain other bacteria, mold or pesticides which could be harmful when exhaled into the air.

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