Health and Hygiene

Overview

Health and Hygiene forms a foundational topic in Environmental Studies for WB TET Paper I, directly connecting classroom learning to children's daily lives. The topic emphasises how personal cleanliness, safe food and water practices, and disease prevention contribute to overall well-being. For primary-level teaching, this topic helps children develop lifelong habits while understanding the scientific reasoning behind hygiene practices.

In WB TET, questions typically test your understanding of basic hygiene practices, common diseases and their prevention, the role of clean water and balanced diet, and age-appropriate methods to teach these concepts. You must know both the content (what to teach) and the pedagogy (how to teach it effectively to young learners). Expect 2–4 questions from this area, often framed as classroom situations or identification of correct/incorrect practices.

Key Concepts

• **Personal hygiene** refers to practices that maintain cleanliness of the body — bathing, handwashing, oral care, nail trimming, clean clothes, and hair care. These prevent skin infections, dental problems, and communicable diseases.

• **Handwashing is the single most effective way to prevent disease transmission.** Key moments: before eating, after using the toilet, after playing, after touching animals, and after coughing/sneezing.

• **Balanced diet** means food containing all nutrients in proper proportions — carbohydrates, proteins, fats, vitamins, minerals, water, and roughage. No single food provides all nutrients.

• **Safe drinking water** must be free from germs and harmful chemicals. Methods to make water safe: boiling, filtering, chlorination, and using water purifiers.

• **Communicable diseases** spread from person to person through air, water, food, or direct contact. Examples: cholera, typhoid, common cold, tuberculosis, and COVID-19.

• **Non-communicable diseases** do not spread from person to person. Examples: diabetes, heart disease, and deficiency diseases like scurvy and rickets.

• **Vaccination/Immunisation** protects children from dangerous diseases by building immunity. The Universal Immunisation Programme covers BCG, OPV, DPT, measles, and hepatitis B.

• **Environmental sanitation** includes proper disposal of waste, use of toilets, keeping surroundings clean, and preventing stagnant water to control mosquito breeding.

Key Facts

| Category | Must-Remember Facts | |----------|---------------------| | **Handwashing** | Wash with soap for at least 20 seconds; clean between fingers and under nails | | **Safe Water** | Boiling for 10–20 minutes kills most germs; store water in clean, covered containers | | **Balanced Diet Components** | Carbohydrates (energy), Proteins (growth/repair), Fats (energy storage), Vitamins (protection), Minerals (body functions), Water (transport), Roughage (digestion) | | **Deficiency Diseases** | Vitamin A → Night blindness; Vitamin C → Scurvy; Vitamin D → Rickets; Iron → Anaemia; Iodine → Goitre | | **Water-borne Diseases** | Cholera, Typhoid, Jaundice, Dysentery, Polio | | **Air-borne Diseases** | Tuberculosis, Common cold, Measles, Chickenpox, COVID-19 | | **Vector-borne Diseases** | Malaria and Dengue (mosquitoes), Plague (rat fleas) | | **ORS Solution** | Oral Rehydration Solution — treats dehydration from diarrhoea; contains salt, sugar, and water |