Nicotine changes how your body and brain function. It both invigorates and relaxes smokers, depending on how much they smoke. There are almost no benefits to nicotine, whereas there are many disadvantages. The most dramatic of these include cancer, emphysema, heart disease and stroke.
All nicotine products now carry warnings, cannot be sold to people below the age of 18 and in South Africa tobacco advertising has been severely curtailed. Smoking in all public buildings has become illegal and restaurants are required by law to have separate smoking sections that are properly walled off from the rest of the establishment.