Class 9 Biology Why Do We Fall Ill Non-infectious Diseases

Non-infectious Diseases

The diseases that are caused by the means other than microbes are called non-infectious diseases.

They are mainly caused by internal means like personla hygiene, environmental factors, genetic disorder, etc.

For example, cancer, diabates, heart disease, stroke, chronic lung disease, etc.

Fig. Person suffering from heart attack

As they are not caused by microbes therefore they do not spread from an infected person to a healthy person through any means. Therefore, they are also called non-communicable diseases.

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