The take-home message for smokers is that any exposure to cigarette smoke is too much, Kenneth Johnson, an epidemiologist at the University of Ottawa who was not involved in the research, wrote in an editorial
Looking specifically at studies which took into account a range of factors such as age, BMI, cholesterol and blood pressure, the team found that men smoking one cigarette a day have a 74% increased risk of coronary heart disease compared with never-smokers, while women who smoked one a day had a 119% increased risk
Many nonprescription drugs, such as acetaminophen (Tylenol), have this same effect
Bonus: They also have Halloween costumes
Maximum yields might improve public healthif filter vents were banned: a lesson from the history of vented filters
However, Dr