but there's no shortage of studies looking into health and nutrition says lilian crist from the charitéin berlin. valley a week goes by without new medical recommendations. but often they're based on research that isn't scientifically rigorous they have too few participants all there is no control group. lillian crist studies all the major diseases of modern civilization such as cancer dementia and heart attacks. looking at what might protectors and what might increase the risks the epidemiologists is hoping to counter scientific myths such as detoxing with facts divison shaft mr. science wants to bring the truth to light and i want to dispel myths merged into it once to explain links and determine whether treatments help or not. the aim is to find out more about the human body for example. million christe works for the nationwide narco health study narco is the german national cohort and has been running since two thousand and fourteen the scientists want to examine two hundred thousand people at regular intervals over a period of twenty to thirty years. the scientists have set the bar