i have a sisha pen, im 15, and my attitude has changed in a bad way i started getting more angry, sad, depressed and all kinds of emotions. my attitude seems to be after ive been using the sisha pens and honestly i smoke it ALOT and my friend smoked it alot too it was even effectin the relationship with his girlfriend, my best mate and after he stop smoking the pen there relationship is soo much better and in the past few days me and my boyfriend starting going down hill and i spoke to my friend about it and we spoke about how it could be the pen... im wondering is it actually the pen that mentally effective????