What we eat each day can have a major impact on gut health and the risk of certain diseases. According to Harvard-trained gut doctor Dr Saurabh Sethi, including calcium-rich foods such as yoghurt in the diet may help lower the chances of colon cancer. Berries, meanwhile, provide fibre and polyphenols that support beneficial gut bacteria. Ensuring adequate fibre at every meal can further promote healthier and more efficient bowel function.