hello user - i understand your concerns . "yes" marijuana can cause heart rate and blood pressure abnormalities especially during early uses , and with time being few people adapt to it while few do not - The risk is even more with people already having a cardiac condition or its risk factors like obesity , lipid abnormalities or family history - The symtoms can also be due to anxiety or primary cardiac condition - so reporting the physician about its use will help them in evaluation and management . Take care