Hopstock LA, et al. – This study gauged the total cholesterol (TC) levels and impact of lipid–lowering drug use in the Norwegian population. It also entailed the comprehension of the effect of diet, lifestyle and treatment. A significant decrease was brought to light in mean TC levels in the general cohort, between 1979 and 2016 in all age groups. In birth cohorts, TC appeared to rise with age, to a peak around middle age followed by a decrease.