Good information, guys.

Even before the study information in your links came out, Tokin Chick, there was fairly good evidence that cannabis could put people at higher risk of embolic (clot or plaque-particle caused) strokes, just as it puts them at increased risk of heart attacks, too, especially soon after smoking. The higher blood flow velocity and increased pulsatility index data persuades me that it could easily boost hemorrhagic stroke and aneurysm risk, too, and make those events much worse when they happen.

What the jury's still out on is whether that's caused by the smoking itself, which raises vascular pressureand speeds up the circulatory rate, or whether it's caused by the active ingredients in cannabis. I'm betting it's more likely the smoking and that if they did those same tests on people who use vaporizers, they'd see different results. Weed's circulatory effects, at least for whole smoked weed, have always been among the bad news about the stuff.