The first thing to realize is that you must consume a wide variety of plant-based foods.
Certain (but not all) high-fibre foods contain prebiotics that 'feed' the beneficial gut flora.
Yogurt, kefir, and kombucha are fermented foods prepared with bacteria or yeast.
Artificial sweeteners may lower kilojoule intake but harm gut microbiota diversity.
If you consume a lot of rice, try wild rice, quinoa, or buckwheat. consume more ancient grains.
A diet rich in fruits, vegetables, legumes, extra-virgin olive oil, and whole grains can reduce depression ratings in certain individuals.