I was a 35 year smoker , 1 and 1/2 packs a day. 3 years ago my heart doctor told me I had to quit smoking. He was the one who told me to try a e- cig. I did some research on line and ordered a 510 e-cig kit. Since that day, oct 12 2010, I have not smoked a regular cigarette . I followed his (dr) advice and started with a high nicotine , and over time brought the level to 0. I had tried many time to quit in the past, with the patch, inhaler , gum and mints(nicotine ) and failed. I never thought that I could quit, but with the e- cig it was possible , and very easy. I have been monitored by a cardiologist and pulmonary Dr , and my health tests are normal. In fact I now have stopped using medication for asthma . I no longer need it. My heart and lung health has improved .