Dr. Dalrymple discusses how the habit of smoking has undergone a profound change during his lifetime over at The Epoch Times.

It is true that the causative connection between lung cancer and smoking, first drawn in Nazi Germany and then, with better data, in Britain and America, led to a rapid decline in the numbers of people who smoked, so that now less than a quarter of the population smokes. But there is something more to the decline than this.