Prebiotic foods are high in a type of fiber that passes through your gastrointestinal tract undigested and feeds your friendly gut bacteria, stimulating their growth and activity. A diet rich in prebiotic fiber helps you cultivate a healthy population of friendly bacteria in your gut and prevents the growth of unhealthy bacteria. Feed your friendly flora regularly with these prebiotic foods, examples include:

Almonds

Asparagus

Bananas

Barley

Beans and lentils

Cashews

Chickpeas

Endive

Garlic

Greens – beet, mustard, turnip

Jicama

Kiwifruit

Leeks

Oats

Onions

Whole wheat