According to the study, light ex-smokers rapidly reduce their risk of CVD to that of never having smoked.

According to the study, which was published in JAMA Network Open, heavy ex-smokers could take more than 25 years to reach the same level of CVD risk as never-smokers. Finding out how long someone needed stop smoking in order to lower their risk of cardiovascular disease (CVD) was the goal of the study.

According to a recent study, there is a dose-dependent relationship between smoking and the risk of cardiovascular disease (CVD), with light ex-smokers having a risk of CVD that is comparable to that of never-smokers not long after quitting.

The study, which was published in the journal JAMA Network Open, suggested that it may take more than 25 years for heavy ex-smokers' residual CVD risk to equal that of never-smokers.

The goal of the study was to determine how long it takes for someone to stop smoking in order to reduce their risk of cardiovascular disease (CVD).

Ex-smokers with fewer than 8 pack-years (PY) did not show a significantly higher risk of CVD than never-smokers in a cohort research that used data taken from the Korean National Health Insurance Service database and included over 53 lakh participants.

However, the results showed that it took more than 25 years for the residual CVD risk of smoking to go away for ex-smokers who had accrued at least 8 PY.

According to the authors, the findings imply that ex-smokers who have been smoking for at least eight years should be treated as having the same risk of CVD as current smokers and their care should be organized appropriately.

According to the number of years that passed after quitting smoking, the study assessed the relationships between lifetime smoking burden, smoking cessation, and CVD risk.

"Public health and clinical practice will be significantly impacted by these findings. There is a definite dose-response relationship between smoking and CVD risk regardless of quitting status, which highlights the significance of completely avoiding smoking beginning, according to the scientists.

When someone first starts smoking, they may stop if their total smoking does not above a threshold, also known as the "point of no return" (in this case, 8 PY). Significant clinical improvements are anticipated shortly after stopping.

Accordingly, the findings imply that quitting smoking before the age of eight years old has significant public health advantages.