Most antibiotics interfere with the bacteria's ability to synthesize a cell wall, a necessary component for bacterial life. This being the case, antibiotics inhibit the growth of any cell with a wall or ribosome resembling that of most bacteria. When called in, the police not only eliminated your uninvited guests, but your invited guests as well. Billions upon billions of bacterial cells make a home in a healthy human body. More than 500 different species can be found in the intestinal track alone.
Bacterial cells outnumber human cells ten to one .
From their perspective, we are their hotel manager and they are our guests. These invited guests serve us well by synthesizing vitamins, fighting off infection, aiding in digestion, and supporting a healthy immune system. However, sometimes we are exposed to malicious strains of bacteria which become unwanted tenants by creating infections. Most of the time the immune system, in combination with the beneficial bacteria, can elminate infections when given enough time and supported through nutrition. But in some instances, an infection can become too much and other actions need to be taken.