The younger you start smoking, the more likely you are to smoke daily as an adult, even into your 40s, and the harder it will be to quit, according to new data from a long-standing, international study published today in the Journal of the American Heart Association, an open access journal of the American Heart Association.
The new research has the longest follow-up of any study focused on smoking at an early age, using information obtained directly from children and adolescents in the 1970s to 1980s and re-contacting many of them as recently as 2018.
