Although THCA pre rolls mostly provide the effects of Delta 9 THC when burned, it is interesting to mention the possible wellness benefits of THCA when in its raw, unheated state. It is believed that unheated THCA can provide such benefits as helping to foster a sense of calm, comfort, and encouraging appetite. By lighting a THCA pre roll by Killa Kush, the heat transforms the THCA into Delta 9 THC, which is usually selected to relax and improve mood.