Israel has the longest running scientific repository on Cannabis and CBD in the world going back to the 1950’s and so far there are NO signs of it being anything but safe
That does NOT say it has magical disease curing power but it is safe
If the plant is vaporized and not incinerated as in vaping vs. smoking then the safety margin increases MANY fold. The issue is not the plant the negative issues come from the incineration process. Similar to tobacco smoking and or smoking many other things like hashish and the like the huge danger is the by-products of incineration
Remove that risk but either chemically removing the desired compounds or using them at lower temperatures and the science suggests that cannabis is quite safe and shows POTENTIAL value in pain and seizure control. As far as curative potential the jury is still very much out on that. There is really no evidence it cures anything including but not limited to cancer and diabetes
We have MANY hundreds of patients using the CBD extract from cannabis for nausea and pain control but so far have seen no negative side effects and no resolution of their cancer but we didn’t expect that either