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KEEPING HEALTHY - Diet and Exercise Balanced nutritious food intake, doing regular aerobics to help reduce the risk from some non-communicable diseases, obesity indexes, effects of diet deficiencies [Author © Dr WP Brown PhD: Doc Brown's biology exam revision notes suitable for students of UK IGCSE & GCSE level biology courses & ~ US grades 9-10 biology, updated August 24th 2025] Sub-index for this section on diet and exercise for good health (1) What is a healthy balanced diet? (2) What are the consequences of an unbalanced, unhealthy or inadequate diet? (3) Metabolism, body mass and what are our energy requirement?, note on inherited factors (4 Aerobic exercise reduces risk from some non-communicable diseases (5) Obesity and measures of obesity - body mass index and waist-to-hip ratio (6) Measuring the calorific value of foods, theoretical energy released on metabolising oil/fat WHERE NEXT? See also Respiration - aerobic and anaerobic and Keeping healthy - non-communicable diseases - risk factors for e.g. CVD, cancers, obesity, diabetes Find your GCSE science course for more help links to revision notes This is a BIG website, you need to take time to explore it [Website Search Box] General HUMAN BIOLOGY revision notes See also cell biology index above Introduction to the organisation of cells => tissues => organs => organ systems Examples of surfaces for the exchange of substances in animal organisms Homeostasis - introduction to how it functions (negative feedback systems explained) Homeostasis - control of blood sugar level - insulin and diabetes Homeostasis - thermoregulation, control of temperature The brain - what the different parts do and the dangers if damaged An introduction to the nervous system including the reflex arc Hormone systems - Introduction to the endocrine system - adrenaline & thyroxine hormones Hormone systems - menstrual cycle, contraception, fertility treatments Respiration - aerobic and anaerobic in plants and animals Keeping healthy - communicable diseases - pathogen infections Keeping healthy - non-communicable diseases - risk factors for e.g. cancers
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