Yes, it's very bad. I used to date someone who smoked those things, and sometimes just chewed them, and had to quit when he started getting ulcerated sores on his lips and tongue, and was reamed a new asshole by his doctor over it! Doc sez: GREAT way to give yourself mouth cancer, at teh very least. Not to mention the damage to your lungs... ask any of our members who has/is undergoing cancer treatment how much fun it is.