08 Jan 2018 --- Fermented foods – such as yogurt, kefir, kombucha and sauerkraut – are to be the no. 1 superfood for 2018, underlining that consumers will be “going with their gut” in the coming year by seeking out foods that improve gut health and overall well-being. This is according to the Pollock Communications and Today's Dietitian's "What's Trending in Nutrition" national survey which gauges the opinions of 2,050 registered dietitian nutritionists (RDNs) on what consumers are thinking and eating.