Is your roommate a doctor? If not, he should keep his medical opinions to himself. Cold turkey detox can be extremely dangerous. People have actually died from it. There is also the risk of stroke, seizure or heart-attack. If you are at all able to go to a medical detox facility, I highly recommend you do so. That is how I did it and if I were stupid enough to ever get myself into that same position again, I would do the medical detox again.