When will your health risks go back to normal after quitting smoking?

Published: 08:51 GMT, 3 November 2024 It could take more than two decades for the risk of heart disease to drop back down to average after an individual gives up smoking, a new study suggests. For decades, experts have known that puffing on cigarettes can cause significant damage to the heart. At least 15,000 heart disease deaths in the UK are attributed to smoking every year, according to the British Heart Foundation. Now, researchers in South Korea have discovered exactly how long it takes for an ex-smoker's cardiovascular system to resemble a never-smoker's: 25 years. What's more, the findings revealed that heavy ex-smokers who've puffed for more than eight years have a similar risk of impending heart attack or stroke as those who still smoke. In the study, published in the journal JAMA, researchers examined health data from more than 100,000 ex-smokers and more than 4million never smokers. The ex-smokers were followed up a decade after they stopped smoking. Other details were noted including age, how old they were when they started smoking, how many cigarettes they smoked a day and their age when they quit. The study found the link between smoking and cardiovascular disease risk was dose-dependent — meaning those who were light smokers saw their risk plummet relatively soon after stopping. But for heavy ex-smokers, who had smoked for at least eight years, the researchers concluded it could take 25 years for the risk of heart attack and stroke to reduce to that of someone who has never smoked. The study authors said: 'Heavy ex-smokers should be considered to have a cardiovascular disease risk equivalent to that of patients who continue to smoke.' Read More Experts discover the amount of cannabis you need to smoke to cause brain damage - and it's not much article image Smoking kills around 78,000 people in the UK every year, with many more living with illnesses due to their habit.