Rather than looking at the likes of the South Beach Diet and the 5-2 Diet, The World's Best Diet looks at the eating patterns of humanity and how it's changed in the last 50 years. Hosts Jimmy Doherty and Kate Quilton explore the various diets around the world, from tribal communities to bustling cities, and get the lowdown from dietary experts on the top 50 diets from worst to best, all the while learning how we can improve our lives and health through healthy eating.