Treating, curing and preventing disease

Treating, curing and preventing disease is a core topic in WJEC GCSE Biology that explores how we manage both communicable (infectious) and non-communicable diseases. You'll learn about the different methods used to treat diseases—from antibiotics and antivirals to painkillers and surgery—and understand why some diseases can be cured while others can only be managed. The topic also covers the body's natural defences, the role of vaccines in prevention, and the importance of lifestyle choices in reducing the risk of non-communicable diseases like heart disease and type 2 diabetes.

This topic is crucial because it connects biological principles to real-world medicine and public health. Understanding how drugs work, how antimicrobial resistance develops, and how vaccination programmes protect populations is essential for making informed decisions about your own health and for appreciating the challenges facing modern healthcare. It also links to other areas of biology, such as the immune system, pathogens, and the effects of lifestyle factors on the body.

By the end of this topic, you should be able to explain the difference between treating symptoms and curing a disease, describe how antibiotics and antivirals work, evaluate the use of vaccines, and discuss the social and ethical issues surrounding disease prevention. This knowledge will help you answer exam questions that ask you to apply biological principles to unfamiliar scenarios, such as explaining why a particular treatment is used for a specific disease.