Does smoking have anything to do with weight gain or loss?Some people whom quit says that it makes them gain weight. Some people who quit say that...

It is very common for people to gain weight when they quit smoking. The nicotine that is present in cigarettes acts as an appetite suppressant and can also speed up metabolism. This is one of the reasons that people may not gain weight when they smoke, but then gain weight if they quit.

In addition, smoking numbs smell and taste. After a person quits smoking, their senses of smell and taste return to normal and food may become more pleasurable.

Also, many people who smoke have an oral fixation on the cigarettes so when they quit smoking they feel the need to have something by their mouths, such as food.