The latest study to question advice on dietary fats, carbohydrates and cardiovascular disease and mortality is a large epidemiological cohort study of people aged 35–70 years, enrolled between 2003 and 2013 in 18 countries.¹ The study recorded the dietary intake of 135,335 people using validated food frequency questionnaires, with a median follow-up of 7.4 years. Primary outcomes were total mortality and major cardiovascular events. Participants were categorised into quintiles of nutrient intake …