old tobacco knife Prince Albert Crimp Cut Cigarette

They eliminate many of the toxic byproducts of burning tobacco, but theyre not risk-free

Brief behavioural support interventions, also known as very brief advice (VBA), are often delivered by a range of healthcare professionals, over a few minutes, and typically involve three simple steps: 1

Smoking 15 cigarettes daily for 10 years equals 7.5 pack years: (15 20) 10 = 7.5 Smoking 20 cigarettes daily for 5 years equals 5 pack years: (20 20) 5 = 5 Smoking 40 cigarettes daily for 25 years equals 50 pack years: (40 20) 25 = 50 Smoking 10 cigarettes daily for 2 years equals 1 pack year: (10 20) 2 = 1 These examples demonstrate how the formula applies to varying smoking habits

doi:10.1093/ntr/ntz040