Brief summary of above:

Cannabis is a vasodilator which temporarily increases cardiac output tho that can mediate over time. Because it is a vasodilator it lowers blood pressure for varying amounts of time. It has been shown to lower cholesterol (Not in my case).

One study does relate MI (heart damage/heart attack) to cannabis smoking....but that same study had folks who were smoking cigarettes and drinking alcohol....Not what I consider fair, but it certainly makes sense.

I advised my cardiologist, and was told if I take it orally, I may continue to take it.... (I was diagnosed with a very bad lesion in one of the most important heart vessels yesterday, which is to be fixed Monday.)

Some of those studies will use dronabinol or marinol as part of the basis, which was how I managed to find most of this info. Tho we don't find it works right, it is studiable because the dose is controllable.

So to summarize, cannabis does not seem to cause injury to the myocardium unless smoked in conjunction with other smokeables. It lowers blood pressure short term, and it may play a part in lowering cholesterol.

These are all unbiased medical documents, and I think we can see that more research definitely is necessary. Now if the government would just see this.