effects of tobacco on the circulatory system and smoking Tobacco smoking and vascular biology

Channappanavar R, Perlman S

Individuals with arrhythmias or uncontrolled hypertension risk worsening cardiovascular strain, as nicotine can increase heart rate and blood pressure

While many smokers believe their habit relieves feelings of stress or depression, research shows that quitting is significantly better for mental health, with effects equal to (or greater than) the effects of antidepressant medications

And don't get me wrong, I like several candle fragrances in general

A 2012 review that looked at methods for assessing environmental exposure to cigarette smoke found that blood cotinine levels may reach their half-life in less than 1 day