Overall rates of smoking are declining in canada. Yet, rates of smoking are higher in: ages 20-35, low ses, aboriginal populations, non-immigrant canadians. This info tells us that there socio economic differences in smoking. The number of people smoking declines with increases in income as well education and status. Policies help in decline but not all countries to do that. Rise in vaping would change this graph. A new graph- 20-34, 3-49, 55-69 trends have continued. More females from 12-17 have been smoking too. A smoking habit generally develops slowly, often taking years. Mortality: smoking is the number one preventable cause of death and disease in canada, smoking reduces life expectancy by several years, rate of premature death is double compared to the rate of non-smokers. Disease: cardiovascular disease, cancer, chronic lower respiratory diseases, they have smokers cough. Individuals who experience second hand smoke is a #1 risk factor for non-smokers: very bad as well.