Antibiotics can kill good bacteria and thus cause serious problems.

Simply put,

antibiotics are poisons that are used to kill.

Only licensed physicians can prescribe them. The drugs are used to kill bacteria. Certainly, many people have benefited from using them. However, if bacteria were the only organisms that antibiotics killed, much of this book would be unnecessary. In fact, I contend that poisons that kill small organisms in small doses — organism-specific varieties notwithstanding — can also kill big organisms, when they are taken in big doses. You, my friend, are a big organism.

We’ve talked about the link between fungus and human disease. This chapter addresses the possibility that antibiotics may help fungi to proliferate within the human body.

As an adult human, you have three to four pounds of beneficial bacteria and yeast living within your intestines. These microbes compete for nutrients from the food you eat. Usually, the strength in numbers beneficial bacteria enjoy both keeps the ever-present yeasts in check and causes them to produce nutrients such as the B vitamins.