5. Human Disease
Sources (causes) of Disease
Sources (causes) of Disease :
Generally, factors affecting health may be divided into following groups -
(a) Intrinsic factors and
(b) Extrinsic factors
(A) Intrinsic or Internal Factors :
The disease causing factors which exist with in the human body are called intrinsic factors.
The important intrinsic factors which affect human health are the following -
Malfunctioning or improper functioning of various body parts.
Malfunctioning of immune system
The diseases caused by intrinsic sources or factors are called organic or metabolic diseases.
Some of the diseases caused by intrinsic sources are -
Osteoporosis (Pore in bones)
Myopia or short sightedness
Sickle cell anaemia etc.
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