If they are unable to do so it is usually caused by age or an outside source. As far as the fungal or
yeast ingestion goes, when a person gets a
yeast infection anywhere
in their body it often times bounces from one place to the next because it always starts in the stomach, even the type woman get, and there is very few conventional medicine doctors who treat it properly. They tend to treat the area where it shows up when in reality the should be treating the stomach where it began.