Quitting smoking does not usually cause diabetes. Quitting smoking may cause hunger pangs and increased appetite, and uncontrolled overeating can lead to weight gain. Some smokers like to eat small snacks, cookies, melon seeds, peanuts, etc., which also increase weight. Obesity is the main trigger for diabetes that occurs after smoking cessation. Obese patients may appear insulin resistance, insulin sensitivity decreases, so that the ability to reduce blood glucose, blood glucose can not enter the cell in time to play a role in glucose can not be utilized, resulting in elevated blood glucose leading to diabetes. Therefore, after quitting smoking, we must pay attention to diet control, not overeating, avoid eating sweet foods, increase exercise, weight control, weight loss, can effectively avoid the occurrence of diabetes. If you experience discomfort during the process of quitting smoking, it is recommended that you seek medical attention in a timely manner.