1. Eat a wide range of foods
Especially vegetables, fruits, seeds, legumes and fibre-rich carbohydrates to stimulate different strains of good bacteria.
2. Get into fermented
Yoghurt, sauerkraut and kefir contain good bacteria lactobacilli, which help reduce the risk of disease.
3. Limit sweeteners
Research shows artificial sweeteners increase blood sugar by stimulating the growth of unhealthy bacteria in the gut.
4. Take a supplement
Particularly when your skin is looking blah, a probiotic supplement ensures you're giving your gut a healthy dose of live bacteria.
5. Stock your plate with prebiotic
Think artichokes, bananas, asparagus, oats and apples.
6. Embrace whole-grains
With loads of fibre and beta-gluten, wholegrain will encourage good bacteria to flourish.
7. Focus on polyphenols
Plant compounds found in red wine, green tea, dark chocolate and olive oil, polyphenols help boost healthy bacterial growth.