Human Health And Disease

Polio myelitis is caused by virus (RNA virus), while other three diseases are caused by bacterian. Diphtheria are caused by Mycobacterium tuberculosis, Treponema pallideum and Cornebacterium diphtheria.

In liver, alcohol is converted into a more toxic substance, acetaidehyde which is metabolized by cells for energy liver synthesises fat from alcohol and the extra fat decreases the production of enzymes and structural proteins.
Due to this, the liver becomes a storehouse of fat instead of a metaboliccentre. It causes fatty liver syndrome, leading to cirrhosis (replacement of liver cells by fibrous tissue).