A2 Health And Social Care Unit 9 Coursework

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Unit 9 – Investigating Diseases Section 1-Introduction What is health? In 1946 the World Health Organisation (WHO) defined health as a state of complete physical, mental and social wellbeing, not merely the absence of disease or infirmity. What is disease? The definition of ‘disease’ is a deviation from or interruption in a part, organ, or system of an organism resulting from various causes, such as infection, genetic defect, or environmental stress and characterized by an identifiable group of signs or symptoms e.g. coughing, sneezing, drowsiness, feeling weak etc. (http://www.thefreedictionary.com/disease) There are two types of diseases, Communicable and Non-Communicable diseases. Communicable diseases are diseases that are passed through micro-organisms e.g. flu virus and Non-Communicable diseases are diseases that cannot be passed through micro-organisms e.g. lung cancer. Communicable Diseases Communicable diseases are diseases that is carried by micro-organisms and spread through various objects and creatures e.g. animals, food, air etc. These diseases rely on the exchange of fluids contaminated substances, or close contact to travel from an infected carrier to a healthy individual. People frequently catch them and it can be caught very quickly and easily, but people also see that the time it takes to recover from these illnesses is also quick and easy. The general communicable diseases are: Measles, chicken pox, cold sores, rabies, HIV/AIDS, Flu (Influenza) Although the recovery process may be fast and easy in normal cases, in other cases it can be a slow process as the illness could be seen as something more severe due to the fitness level or age of the person that has caught the illness e.g. a healthy teenager who caught the flu would be able to recover quicker than an elderly, unhealthy person. (Walsh et al, 2006) Micro-organisms are small

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