January 23rd: validity: asking the right questions to get the right answers, e(cid:454). Death and disease in 2012, 6. 6 million children in the world under 5 years of age died from easily preventable or treatable diseases: poverty, malnutrition, lack of clean water and adequate sanitation are primarily causes. Poverty and growth: economic growth has not guaranteed a better healthy nation. It is always the gap between the rich and the poor, what matters. When opportunities are similar across social classes, then happiness tends to come and stay: read page 46 canada in a global context in textbook. Social sources of disease and death: disease: refers to a biological problem, epidemology: is the study of distribution of diseases within a population. European population: 15th and 17th centuries saw a decline in great pandemics, by the 18th century, health of people improved.