Question

Explain the different types of diseases.

Answer 1

There are four main types of diseases. They are:

1. Infectious diseases
2. Hereditary diseases
3. Physiological diseases
4. Deficiency diseases.

1. Infectious diseases: Infectious diseases are caused by micro-organisms that invade our bodies and multiply inside them. These diseases are spread from one person to another.

E.g. Common cold.
2. Hereditary diseases: Hereditary diseases are spread by abnormalities in the gene. These diseases are passed from parents to children.

E.g. Heart disease.
3. Physiological diseases: Diseases that are caused due to malfunction of the body organs are called physiological diseases.

E.g. Asthma.
4. Deficiency diseases: A diet that contains all essential nutrients in correct proportion is indispensable for maintaining good health. Deficiency in one or more of the nutrients causes various diseases. These are called deficiency diseases.