“Like weeds in a lawn, pathogenic fungi and yeasts (single-celled fungi) can invade and overtake our bodies. In people with healthy immune systems, cells called macrophages and neutrophils engulf these pathogens, nipping them in the bud. But when the immune system is weakened by disease or drugs, fungi – much like weeds in your garden – can grow unchecked.” – Whitehead Institute For Biomedical Research
This image below shows a human brain taken over by Aspergillus, which is commonly found all over the world and in almost all homes that have been water damaged. This is just a small example of what mold can do to humans.