It is advised to stay away from smoking because obese patients often suffer from chronic diseases such as high blood lipids, diabetes or sleep and breathing problems, so smoking is a key factor in the worsening of these cases but can be practiced these wrong habits after two weeks for For smoking cigarettes and a month for smoking shisha.

Smoking should be discontinued 5 days before the operation, and the Respirometer should be used 3 days before the operation and brought in the hospital 3 days after the operation.