Westernised diets lack fibre – on average, a Western diet only covers about 60% of the recommended daily fibre intake. Research is gathering evidence that lack of dietary fibre plays a role in the development of metabolic syndrome, diabetes, neurodegeneration, as well as cancer and cardiovascular diseases. While researchers agree that we should eat more fibre, what happens to it once it is in our bodies can vary from person to person – one size does not fit all. In the quest to find out how humans can age in a healthy, disease-free way, researchers are working to shed light on the exact role dietary fibre could play.