Like bacteria and viruses, fungi cause many plant and animal diseases. They cause much damage to agricultural crops and are responsible for human afflictions such as athlete's foot and many other skin diseases.
但與細菌、病毒相同的是，真菌在農作物疫病上闖下不少禍害，人類得香港腳、富貴手等皮膚病，也都是它在從中作祟。