Assignment 1 unit 43
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Task 1
B. In your own words, describe each category of disease. Maximum 150 words for
each category.
1. Infectious diseases
Infectious diseases are disorders, which are usually caused by organisms like bacteria,
viruses, fungi or parasites, many of these live in our own bodies.
They are normally harmless and sometimes helpful, but only in certain conditions.
Some of these organisms can cause diseases.
The symptoms of these are mostly fatigue and fatigue.
2. Environmental diseases
Environmental diseases are a type of diseases, which are caused by environmental factors.
Pesticides, chemicals, radiation, air pollution, and water pollution, are some of the manmade
hazards that are believed to contribute to human illnesses.
3. Degenerative diseases
A degenerative disease is a type of a medical condition that causes a tissue or organ to
deteriorate over time. There are quite a number of degenerative diseases and many of them
are associated with aging, or gets worse during the aging process.
Degenerative diseases are classified into three main groups: cardiovascular, neoplastic, and
nervous system. The most common cardiovascular diseases are hypertension, coronary
disease, and myocardial infarction. Neoplastic diseases include tumours and cancer.
Diseases that affect the nervous system include Parkinson’s and Alzheimer’s.