question: my father experience numbness in his right hand after CABG 8 month ago. Doctor said it is normal side effect of post CABG. But my fther not happy with the numbness. so last week he start smoking ( he is a heavy smoker before but quit smoking after the CABG. he quit smoking for 8 month until recently ). He said the numbness gone after he start smoking. My question is, is nicotine or any substance in the cigarate have some effect on the the nerve or what so ever that can reduce or heal the numbness.TQ