Is "gut health" really the key to total wellness, or just the latest trend exploited by the food and supplement industry? With the FDA warning that fluoride and artificial sweeteners may disrupt our gut microbiomes, and social media overflowing with testimonials and probiotic products, experts question whether the promised benefits are proven or oversold. As studies reveal gut health claims are often based on weak or inconclusive evidence, is our obsession with the microbiome