There are new data to chew over in the ongoing controversy about obesity being diagnosed as a disease from a study tracking 157,159 participants in the UK Biobank over 13 years. This shows that even in the absence of any metabolic disturbance such as elevated lipids, high blood pressure or diabetes, there is an increased risk of heart attack, stroke, peripheral arterial disease, heart failure and liver disease in people with a body mass index over 30.