OCR AS Biology Unit 2 Module 2: Food and Health Health and Disease OCR AS Biology Unit 2 Module 2: Food and Health

Learning Outcomes Discuss what is meant by the terms health and disease Define and discuss the meanings of the terms parasite and pathogen

What is health? “health is more than just the absence of disease” What is meant by health? What is meant by disease? Health absence of disease Disease disorder of a systems normal functions

What is health? You have been given 6 case studies In your groups discuss the health of each individual Rank them from 1 – 6 1 healthiest 6 unhealthiest Remember you must be able to give reasons for your choices

Definitions Health Disease A state of complete physical, mental and social well-being, which is more than just the absence of disease. Disease A problem with mind or body leading to a departure from good health.

Good Health Free from disease Able to carry out mental and physical tasks expected by society Well fed, balanced diet Housing and sanitation Happy and positive outlook Well integrated into society

The Health Triangle Physical health means the health of the body Mental health means the health of the mind. Social health means forming good relationships.

The Health Triangle Physical Social Mental If you take any of these away - the triangle collapses

What is health? In your groups Go back to the original 6 case studies Have your opinions changes Rank them from 1 – 6 1 healthiest 6 unhealthiest Remember you must be able to give reasons for your choices

Disease There are nine broad overlapping categories of disease (see handout) Diseases can also be grouped into Single cause e.g. malaria Multifactorial e.g. heart disease

Disease Acute Sudden rapid changes and lasting for a short time Chronic Long term – debilitating Develops slowly and persists