Human Health and Disease Class 12 Biology Notes | Detailed Explanation, MCQs & FAQs
Health is one of the most valuable assets of human life. According to the World Health Organization (WHO), health is defined as a state of complete physical, mental, and social well-being, and not merely the absence of disease or infirmity. Diseases can result from infections, improper lifestyle, environmental factors, or genetic causes. In Class 12 …