Question

why do we fall ill?.
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Answer 1

Answer:

Whenever the normal working of our body system gets disturbed, we feel sick. Infectious diseases are caused by pathogens such as bacteria, viruses, fungi and parasites entering the body through the air we breathe, the food and drink we consume or through openings in the skin, such as cuts.

Explanation:

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Answer 2

Answer:

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Why do we fall sick?

Whenever the normal working of our body system gets disturbed, we feel sick. It can happen when a bacterium, virus, etc, enters our body or because of unhealthy living practices like lack of exercise or intake of drugs/excessive sugar/salt.

There are two major kinds of diseases: infectious and non-infectious. Infectious diseases are caused by pathogens such as bacteria, viruses, fungi and parasites entering the body through the air we breathe, the food and drink we consume or through openings in the skin, such as cuts. As an example, through cough and sneezing a person can spread the cold virus to another. Non-infectious diseases are caused by a confluence of factors including the environment, a person’s lifestyle choices and genetics. For example, heart disease may be caused by a sedentary lifestyle and a poor diet, or it may be caused by a family history of the disease.

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