There are an estimated several trillion friendly bacteria comprising over 400 species in the average human gastrointestinal tract. By body weight, each of us carries around nearly four pounds of intestinal microflora.
While Lactobacillus Acidophilus is probably the most well known of these, others you should know about include Bifidobacterium bifidum and B. longum. When the intestines are healthy, there are more friendly bacteria than "unfriendly," or pathogenic ones; you might think of this arrangement as a kind of microbial ecology in which species have their allotted role and population density in the intestinal environment.
Lactobacillus Acidophilus is the predominant friendly bacteria in the upper intestinal tract.…
