Class 9 / Biology / Why do we fall ill ? / Disease and Its Causes

WHAT DOES DISEASE LOOK LIKE?

WHAT DOES DISEASE LOOK LIKE? Let us now think a little more about diseases. In the first place, how do we know that there is a disease? In other words, how do we know that there is something wrong

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Class 9 / Biology / Why do we fall ill ? / Disease and Its Causes

ACUTE AND CHRONIC DISEASES

ACUTE AND CHRONIC DISEASES The manifestations of the disease will be different depending on a number of factors. Some diseases last for only very short periods of time, and these are called acute d

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Class 9 / Biology / Why do we fall ill ? / Disease and Its Causes

CHRONIC DISEASES AND POOR HEALTH

CHRONIC DISEASES AND POOR HEALTH Acute and chronic diseases have different effects on our health. Any disease that causes poor functioning of some part of the body will affect our health. This is b

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Class 9 / Biology / Why do we fall ill ? / Disease and Its Causes

CAUSES OF DISEASES

CAUSES OF DISEASES What causes disease? When we think about the causes of diseases, we must remember that there are many levels of such causes. Let us look at an example. If there is a baby sufferi

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Class 9 / Biology / Why do we fall ill ? / Disease and Its Causes

INFECTIOUS AND NON-INFECTIOUS CAUSES

INFECTIOUS AND NON INFECTIOUS CAUSES As we have seen, it is important to keep public health and community health factors in mind when we think about the causes of diseases. We can take that approac

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