Health: What Does It Really Mean to Be Healthy?

What does “being healthy” really mean in GCSE Biology? In this episode of GCSE Science Simplified, we introduce the Health and Disease topic by clearly explaining the World Health Organization (WHO) definition of health, including physical, mental, and social wellbeing.You’ll learn the difference between communicable and non-communicable diseases, why having one disease can increase susceptibility to other diseases, and what a pathogen is. The episode covers all four types of pathogens required at GCSE level: viruses, bacteria, fungi, and protists, using familiar exam-board examples such as influenza, HIV, malaria, cancer, asthma, and diabetes.This episode is ideal for GCSE Biology revision, helping students understand key definitions, apply knowledge to exam-style questions, and build a strong foundation for the rest of the Health and Disease topic.Perfect for Edexcel GCSE Biology, AQA GCSE Biology, and OCR GCSE Biology students.