"What Are Prebiotics?
Scientists have defined prebiotics as a selectively fermented ingredient that allows specific changes, both in the composition and/or activity in the gastrointestinal microflora that confers benefits upon host well-being and health (Roberfroid 2007)(1)."
Prebiotics encourage good bacteria to grow in the gastrointestinal tract, thus they help regulate digestion, which plays a large part in your health.
Foods that act as a prebiotic:
"What Are Probiotics?
The World Health Organization has formally defined probiotics as live microorganisms which, when administered in adequate amounts, confer a health benefit on the host (FAO/WHO, 2002)(1)."
Probiotics in Foods
The most widely recognized living probiotic bacteria in use today are lactobacilli and bifidobacteria (Macfarlane and Cummings 1999). These bacteria occur naturally in the human GI tract. Figure 1shows images of these bacteria magnified many times under a microscope (1)."
Andrew Syred/Photo Researchers, Inc.
Scimat/Photo Researchers, Inc.
Figure 1. Magnified images of live bacteria commonly used as probiotics.
-Honey For Health & Beauty, From Cooking Well; Introduction: Lauren Feder, M.D., Foreword: Marie-Annick Courtier, Recipes: The National Honey Board