Former smokers investigated
Already, some researchers have attempted to find out how the disease risk of people who used to smoke changes after they quit.
Earlier studies concluded that cardiovascular risk drops just a few years after quitting. However, most early studies were based on relatively small numbers of participants and there was often little follow-up to check smoking status over time.
Now, thanks to a large new subset of people who used to smoke, it is possible to get a better understanding of how quickly (or slowly) cardiovascular health returns to normal. And, because more people used to smoke, it is important to understand how their health might change over time.