According to Hippocrates the theories of disease causation are the 4 humors, blood, phlegm, yellow and black bile.
Contrary to germ theory is the theory that disease due to infection is caused by diminished resistance of the body's fighting mechanism, the immune system. The theory is based on certain...
shower
Lets see: COPD, Asthma, Lung Cancer, Bronchitis, Emphysema.
The germ theory of disease.
Four communicable diseases - 1. Typhoid 2.Tuberculosis 3.Malaria 4. cholera