Smoking Cessation Timeline

Smoking Cessation Timeline: What Happens When You Quit 12 Hours Carbon monoxide Concentration decrease to normal causing blood oxygen concentration to increase. The concentration of nicotine in your bloodstream fallsdown. 24 Hours Your entire body becomes nicotine-free. Symptoms of nicotine withdrawal peaks in intensity. Your lung's functional abilities start to increase. Damaged nerve endings start to regrow and your sense of smell and taste begin to return to normal. Cessation anger and irritability will have peaked. 1 Day 5 Days Heart attack risk starts to drop. Lung functions improve significantly.Insulin resistance normalizes. 1 Month Blood circulation in your body partsreturns to normal and your immune system begins to show signs of recovery. 2 Months Your risk of having stroke and lung cancer returns to that of a non-smoker. Your risk of stroke has declined to that of a non-smoker. 1 Year The risk of coronary heart disease, heart attack and stroke drops to less than half that of a smoker. 10 Years 15Years Your risk of coronary heart disease is now that of a person who has never smoked. Your risk of pancreatic cancer has declined to that of a never-smoker.