The health consequences of tobacco smoking are numerous, and include cancers, stroke, and coronary heart disease, among others. It is also an important contributory factor for respiratory diseases, such as chronic obstructive pulmonary disease (COPD), while smoking among pregnant women can lead to low birth weight and illnesses among infants. Smoking causes the largest share of overall years of healthy life lost in 15 OECD countries, and ranks second in another 16 OECD countries (Forouzanfar et al., 2016). The WHO has estimated that tobacco smoking kills 7 million people per year across the world, of which 890,000 are due to second-hand smoke. It is the leading cause of death, illness and impoverishment.