Challenges to conventional wisdom in preventative medicine – are they warranted?

Physical inactivity, sedentary behaviour, obesity, and poor nutrition and sleep practices are considered risk factors for chronic disease, starting in our youth. However, recent publications have suggested that the risks of obesity are exaggerated; that evidence for the obesogenic effect of sugar is lacking; that increased dietary intake may have little to do with general community childhood obesity; and that flaws of research design, variable...