Why are cigarette smokers so thin and skinny usually?

1. Cigarettes or tobacco contains nicotine. And nicotine suppresses appetite. So less food intake = less calorie/nutrition supply = less body weight. 2. Smoking also limits the oxygen supply to the body. muscles need oxygen for growth and repair. read more

You may ask why some smokers who eat more than normal are skinny. It is because of Malabsorption of nutrients due to damage caused to the digestive system of body. Change in sleep patterns is the another reason why smokers are skinny. Usually people who smoke at night tend to stay awake past midnight. read more

Second, smoking does a lot of damage to your body, but your body constantly tries to repair it. It takes your body a full 24 hours to repair the damage done by one cigarette. For most smokers, their bodies just can't keep up, so it uses the energy stored in fat cells in trying to repair itself. read more

Smoking is the number one cause of preventable deaths in the Unites States and other developed countries, causing lung cancer, heart disease, and chronic bronchitis. But smokers are, on average, skinnier than nonsmokers. New research reveals how nicotine, the active ingredient in cigarettes, works in the brain to suppress smokers' appetites. read more