Smoking Cessation Before Age 40 Years Brings Great Benefits

"Chronic smoking remains a major cause of premature mortality on a global scale. Despite intensified efforts to combat this scourge, a quarter of deaths among middle-aged adults in Europe and North America are attributed to it. However, over the past decades, antismoking campaigns have borne fruit, and many smokers have quit before the age of 40 years, enabling some case-control studies." See more at MedScape.