The authors acknowledge the limitations of dietary research which relies on asking people what they eat and not accounting for change in diets over time, but their study was large with long follow-up, and had detailed assessment of people's diets that was collected in real-time as people consumed the foods, rather than relying on past memory. The authors conclude that their study therefore helps to provide robust evidence that consumption of low-fat fermented dairy products, largely driven by yoghurt intake, is associated with a decreased risk of developing future type 2 diabetes.