Eating a variety of foods, in particular plant foods, is essential for gut health. This is because plants contain prebiotic fibre, polyphenols and other components that can improve the health of our gut via their effects on our gut microbes. Why 30 plants a week? This is the number that has been assigned as a ballpark target by gut health experts to ensure enough variety. Much as 8 glasses of water per day or 10K steps per day, there is nothing magical about the number 30, other than bringing you close to the optimal consumption of beneficial plant components. The concept of eating 30 plant a week is not only…