Remember, quitting smoking may well be the single most important thing you can do to improve your health
Additionally, among people aged 5066 years, functional impairment has been identified as the strongest predictor of smoking cessation, suggesting that these people may have reduced smoking to take care of their health 25
And theres definitely an education factor. Sofya Bazhanova, 19, Sophomore at Boston University studying Philosophy and Religion: Im from Russia, and I started smoking when I was around 16

This neurobiological vulnerability, coupled with psychosocial factors such as peer influence, exposure to other drug users, and sensation-seeking traits, contributes to an elevated risk of transitioning from vaping to smoking and polysubstance use ( E-cigarette use among adolescents correlates with higher rates of alcohol, marijuana, and amphetamine consumption, as well as engagement in risky behaviors such as violence, unsafe sexual activity, and school misconductrisks amplified in dual users of both e-cigarettes and combustible cigarettes ( Encouragingly, recent surveys indicate a gradual shift in perception, with an increasing proportion of students now recognizing e-cigarettes as equally or more addictive than traditional cigarettes ( 3.2.6 The dual users phenomenon Based on the evidence analyzed in this review, between about 30% and 60% of e-cigarette users continues to smoke conventional cigarettes simultaneouslya pattern commonly referred to as dual use ( Dual users exhibit the highest prevalence of respiratory symptoms, including wheezing and asthma ( Beyond physiological effects, qualitative studies suggest that dual users may be driven by complex psychological and behavioral factors

Lashway, S
Effect of long-term vitamin D3 supplementation vs placebo on risk of depression or clinically relevant depressive symptoms and on change in mood scores: a randomized clinical trial