Study finds second-hand pot smoke leads to heart attacks

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SAN FRANCISCO, CA – A contact high used to be okay, and maybe an acceptable excuse for failing a drug test.

But now, researchers at the University of California-San Francisco say second-hand smoke can harm your heart and blood vessels.

The researchers discovered that the blood vessel functions in lab rats fell by 70 percent about a half-hour after breathing in pot smoke. And that can lead to hardening of the arteries and heart attacks.

We already know that breathing in someone else’s cigarette smoke is bad for you, but studies show the arteries return to normal after about 30 minutes. But that’s not the case with inhaling second-hand pot smoke. Blood vessels were still affected as much as 40 minutes later.

In other words, even though you’re not getting stoned, your blood vessels are turning to stone.

But, there is some good news for pot heads.

A study out of St George's, University of London found that the stuff in marijuana that gets you high may be good for your brain, but only if you have brain cancer. Researchers found that brain tumors in lab rats shrank dramatically.

When they received a combination of tetrahydrocannabinol (THC) and cannabidiol (CBD) with radiation treatments. In some cases, the tumors disappeared.

But this isn’t a medical invitation to fire up the bong as a preventive measure. Not unless you’re a lab rat with terminal brain cancer.