Source of info: http://www.mindbodygreen.com/0-14360/why-prebiotics-are-just-as-important-as-probiotics-for-gut-health.html

Probiotics and Prebiotics Support Your Microbiome

Probiotics and prebiotics are both important because they help support your microbiome, the community of trillions of bacteria that live within your body, helping it function at peak health and wellness.

When friendly bacteria predominate, you glow with health. Your weight stays at a healthy level, your metabolism hums, your energy overflows, and you feel optimistic, clear, and focused. Your immune system is in terrific shape, helping stave of infections and illness.

When unfriendly bacteria dominate, however, you struggle along. You gain weight and can’t seem to lose it. You crave sugar. You’re vulnerable to yeast infections, not to mention colds, flu, acne, and numerous other symptoms. You feel fatigued and can experience what I call feeling tired and wired. You might struggle with anxiety and depression. The unfriendly bacteria that have hijacked your microbiome are undermining your health and well-being.

So how do you eliminate the unfriendly bacteria that’s making you feel crummy and preventing you from losing weight? You can take probiotics to add millions of friendly bacteria to your microbiome and prebiotics to nourish the friendly bacteria that’s already in your gut.