The global gut health market is projected to reach £47 billion by 2030, but many products claiming to boost gut health are based on unproven claims. According to Dr Megan Rossi, founder of The Gut Health Doctor, the majority of these supplements lack scientific evidence to support their effectiveness. This leaves consumers with a daunting task: distinguishing between scientifically-backed and unsubstantiated products.
Source: https://www.telegraph.co.uk/health-fitness/diet/gut-health/gut-fixes-that-work