MJ can weaken the sphincter that keeps the acid out of your esophagus, if you are predisposed to that. If your MJ is clean and top notch, you risk of cancer is negligible to none. You most certainly have not done any permanent damage to your stomach, but smoking a lot can have a negative affect on the stomach. read more
Swallowing it is not bad at all, unless you want to get high in which case I suggest inhaling next time. In all seriousness there is no health risks associated with swallowing smoke of any kind, at least not once or twice. read more
My friend said it was because I eat so much and I already have a fast matabilism, and weed makes it even faster, so that could be why i shit so much. hahahah. read more