Healthy cooking: Susan Jane White’s recipe for courgettes with lemon and almond makes a perfect barbecue side

Little could demonstrate this more clearly than Dr Alan Desmond’s interview with ultra-endurance athlete Rich Roll. In the conversation, Dr Desmond, a gastroenterologist, reminds us that two thirds of the 1,200 metabolites flowing through our bloodstream are dependent on an individual’s diet and their gut microbiome. One third is dependent on genetics. So it’s no surprise that our food choices have such a direct, tangible impact on our health.