11. Brussels sprouts
Much more than a festive staple, they contain the kinds of fibre that good bacteria like and sulphur compounds which help combat unhealthy bacteria such as H pylori. Stir-fry with garlic and bacon for a delicious side dish.
12. Bananas
One of nature’s handiest and healthiest snacks, bananas are full of the kind of fibre that good bacteria enjoy. They also contain healthy minerals.