Formerly heavy smokers still have an increased risk of cardiovascular disease (CVD) 16 years after giving up, so they quit now, researchers at Vanderbilt University say.
"Most importantly, our results confirm that there is a huge benefit to quitting smoking and that former smokers can reduce the risk of heart disease by 38 percent within 5 years of giving up compared to educated smokers," Meredith Duncan told IFLScience via e-mail.
In a group that is still unpublished, she collected data from a revolutionary study of Framingham Heart Studie – a long-standing, ongoing study of cardiovascular health initiated in 1948 with just over 5,200 adult volunteers from Framingham, Massachusetts. Following these people for many years, the original researchers have gained a valuable insight into the factors of life associated with the development of cardiovascular diseases (CVD).
Now is the usual knowledge, the first study has linked the compromised heart function and brain stroke to smoking, cholesterol, and high blood pressure. In fact, the term "risk factor" was concentrated on one of the early researchers. Later cohorts add studies to include more racially different subjects and children and grandchildren of earlier participants.
For this study, the team analyzed health outcomes with 8,687 people who had followed a 27-year-old medication – to the development of CVD, death or end of 2014. All subjects were free from CVD when they joined, and about half were smokers.
The results suggest that more than 70 percent of cardiovascular diseases, such as heart attacks, heart failure, and strokes in people who smoked at least one package a day for 20 years – a subgroup for heavy smoking that the Duncan Group hoped to examine more closely .