Human disease and their causes
Disease is a departure from normal health through structural or functional disorders of the body. Health is a state of complete physical, mental and social well being and not merely an absence of disease or infirmity. Signs of disturbed physical health or disease can be seen by a doctor, the symptoms are felt by the patient suffering from the disease have to described by him. Measuring mental health or disease is rather difficult.
The main causes of disease in individual are as under-
1)Genetic or Heritable disease
Down’s syndrome, Hemophilia
2)Nutrition deficiency
Scurvy, Beriberi, Anemia, Goiter, Kwashiorkor
3)Homeostasis or metabolic and hormonal disorders
Sugar diabetes, Goiter, Cretinism
4)Physical disorders due to accident, heat, cold, injury, radiation etc.
5)Chemical causes-poisoning, drug abuse, alcohol, smoking, pollutants etc.
6)Pathogenic or infectious diseases due to other living organisms
Diphtheria, Small pox, Ringworm, Tuberculosis, Malaria etc.
7)Ageing or degenerative diseases
Osteoarthritis, Cataract, Arteriosclerosis etc.
8)Mental illness