The science of food covers the theoretical and practical understanding of how preparation and cooking affect the sensory and nutritional properties of food. It includes heat transfer methods, the role of microorganisms, functional and chemical properties of ingredients (carbohydrates, fats, proteins, fruit/vegetables), food spoilage, and food safety principles.
Diet and good health is a fundamental topic in WJEC GCSE Food Preparation and Nutrition. It explores the relationship between the food we eat and our physical wellbeing, focusing on how nutrients support bodily functions, growth, and disease prevention. Students learn about the Eatwell Guide, dietary reference values (DRVs), and how to plan balanced meals for different life stages and health conditions. This topic is essential because it equips students with the knowledge to make informed food choices, understand nutritional labelling, and evaluate diets critically.
The topic covers macronutrients (carbohydrates, proteins, fats) and micronutrients (vitamins and minerals), their sources, functions, and the effects of deficiencies or excess. It also addresses energy balance, hydration, and dietary modifications for specific needs such as pregnancy, adolescence, or managing conditions like coeliac disease or diabetes. Understanding diet and health is not only exam-relevant but also empowers students to apply nutritional principles in practical cooking and real-life contexts.
Within the WJEC specification, this topic links to food science, food safety, and culinary skills. It provides the scientific foundation for practical tasks like modifying recipes to improve nutritional value or designing menus for specific dietary requirements. Mastery of this content is crucial for achieving high marks in both the written exam and the non-examination assessment (NEA), where students must demonstrate understanding of nutrition in their food investigations and practical projects.
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