A great deal of attention has been given to bad bacteria and the many ways they can harm our health. But how much do we know about good bacteria? This booklet provides exciting new information about the power of probiotics, the friendly bacteria that can boost immunity, as well as help prevent and treat many serious illnesses. Thanks to new research from the burgeoning field of probiotic medicine, we can more fully understand how good bacteria can positively influence all aspects of health and vitality. Featuring information from experts throughout the world, health writer Karolyn A. Gazella describes the far-reaching health benefits that we can gain from quality probiotics.