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Coronary heart disease (CHD) is one of the most important non-communicable diseases covered in the AQA GCSE Biology specification. It is a leading cause of death in the UK and worldwide. In this lesson you will learn what coronary heart disease is, what causes it, how it is treated, and the wider concept of health and disease, including risk factors for non-communicable diseases.
The World Health Organisation (WHO) defines health as a state of complete physical, mental and social well-being, and not merely the absence of disease or infirmity. For AQA GCSE Biology, you need to understand that health is more than just "not being ill."
| Dimension | Meaning |
|---|---|
| Physical health | The body is functioning normally, free from disease and injury |
| Mental health | A state of psychological well-being, the ability to cope with stress, and normal cognitive and emotional functioning |
| Social health | The ability to form and maintain relationships, participate in society, and have a sense of belonging |
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