TEACHGYAN • CLASS 6 SCIENCE • CURIOSITY
Chapter 3 – Mindful Eating: A Path to a Healthy Body
Detailed notes • Nutrients • Balanced diet • Food tests • Deficiency diseases • Mindful & sustainable eating • MCQs • Worksheet
Chapter focus: Food gives us energy and the nutrients needed for growth, repair and healthy body functions. This chapter connects India’s diverse food habits with nutrients, balanced diets, deficiency diseases, mindful choices and reducing food waste.
🎯 Learning Goals
- Explain why we need food and identify major nutrients.
- Relate carbohydrates, proteins and fats to their functions.
- Recognise the roles of vitamins, minerals, water and roughage.
- Understand simple tests used to identify some nutrients.
- Explain balanced diet and deficiency diseases.
- Make thoughtful, hygienic and sustainable food choices.
🍚 1. What Do We Eat?
Food habits vary across India because crops, climate, soil, local traditions and availability differ. A healthy meal can contain foods from several groups rather than depending on one food item.
Traditional foods can be nutritious and locally suited. Eating mindfully means paying attention to what, how much, when and why we eat.
⚡ 2. Nutrients in Food
| Nutrient | Main role | Common sources |
|---|---|---|
| Carbohydrates | Provide energy | Rice, wheat, potatoes, millets |
| Proteins | Growth and repair | Dal, beans, milk, eggs, nuts |
| Fats | Concentrated energy and other body functions | Oils, nuts, seeds, dairy |
| Vitamins | Support normal body functions | Fruits, vegetables and other foods |
| Minerals | Needed for several body processes | Milk, vegetables, pulses and other foods |
| Water | Helps body processes and temperature regulation | Water and water-rich foods |
| Roughage | Supports healthy digestion | Whole grains, fruits, vegetables |
🧪 3. Simple Food Tests
Some nutrients can be indicated by simple tests. An iodine test can indicate starch: a blue-black colour suggests starch is present. A paper test can indicate fats when a translucent greasy spot remains. Protein can be tested using appropriate laboratory reagents under teacher supervision.
Safety: Food tests involving chemicals should be performed only with appropriate guidance and safety procedures. Never taste laboratory samples.
🥗 4. Balanced Diet
A balanced diet supplies the nutrients and other components the body needs in suitable amounts. The exact diet varies with age, activity, health needs, culture and locally available foods.
A balanced meal may include cereals or millets, pulses or other protein sources, vegetables, fruits, suitable fats and adequate water.
🩺 5. Deficiency Diseases
Lack of particular nutrients over time can lead to deficiency disorders. Examples commonly studied include vitamin C deficiency causing scurvy, vitamin D deficiency causing rickets, iodine deficiency causing goitre and iron deficiency causing anaemia. A varied diet helps reduce the risk of nutrient deficiencies.
🌾 6. Millets and Local Foods
Millets such as jowar, bajra and ragi are traditional grains used in many parts of India. Including a variety of locally available foods can improve dietary diversity and may support sustainable food choices.
♻️ 7. Mindful and Sustainable Eating
- Choose a varied and balanced diet.
- Eat appropriate portions and avoid unnecessary overeating.
- Prefer fresh, safe and hygienically prepared food.
- Avoid wasting edible food.
- Consider locally available seasonal foods.
- Reduce unnecessary packaging where practical.
📍 8. Food Miles and Food Choices
Food miles describe the distance food travels from where it is produced to where it is consumed. Distance is only one part of environmental impact, but choosing suitable local and seasonal foods can sometimes reduce transport needs.
📋 Worked Examples
Example 1 – Identify a Nutrient
A meal contains rice, dal, vegetables and curd. Rice mainly contributes carbohydrates; dal provides substantial protein; vegetables contribute vitamins, minerals and fibre; curd provides protein and minerals.
Example 2 – Starch Test
If iodine is added to a food sample and it turns blue-black, the observation indicates the presence of starch.
Example 3 – Balanced Meal
Instead of eating only rice, a meal combining rice or millet, dal, vegetables, curd and fruit gives a wider range of nutrients.
🧠 Think Like a Scientist
- Why can no single food provide everything the body needs?
- Why should food tests be based on observations rather than guesses?
- Why can the same food be part of a healthy diet in one quantity but unsuitable in excessive quantity?
- Why is dietary diversity important?
- How can avoiding food waste be both economical and environmentally useful?
📝 Important Practice Questions
- Why do we need food?
- Name the major nutrients.
- Give two sources of proteins.
- What is a balanced diet?
- What does an iodine test indicate?
- What is a deficiency disease?
- Name two deficiency diseases and the nutrients associated with them.
- Why are fruits and vegetables important in a diet?
- What is mindful eating?
- How can we reduce food waste?
🔥 Competency / HOTS
- A student eats mostly one type of food because it is their favourite. Explain why variety is still important.
- Design a one-day balanced meal plan using foods commonly available in your region.
- A food sample turns blue-black with iodine. What can you conclude, and what can you not conclude from this test alone?
- Two families eat different traditional foods but both have varied diets. Explain how both diets can support health.
- Suggest three practical ways a school can reduce edible food waste.
🧩 MCQ Practice
- Which nutrient is mainly an energy source? A. Carbohydrates B. Minerals C. Water D. Roughage
- Proteins are especially important for — A. growth and repair B. making food sweet C. colouring food D. replacing water
- Blue-black colour with iodine indicates — A. starch B. fat C. water D. salt
- A balanced diet means — A. suitable variety and amounts of needed nutrients B. eating only one food C. avoiding vegetables D. eating as much as possible
- Iron deficiency can lead to — A. anaemia B. scurvy C. rickets D. goitre
- Jowar, bajra and ragi are examples of — A. millets B. oils C. pulses only D. fruits
- Mindful eating includes — A. paying attention to food choices and portions B. wasting food C. skipping water D. eating without hygiene
- Food waste can be reduced by — A. taking suitable portions B. throwing away leftovers unnecessarily C. buying without planning D. ignoring storage
Answer Key: 1-A, 2-A, 3-A, 4-A, 5-A, 6-A, 7-A, 8-A
📄 Printable Worksheet
- List the major nutrients and one source of each.
- Explain the importance of carbohydrates and proteins.
- Write the observation and inference for an iodine test.
- Define balanced diet.
- Match four deficiency diseases with their associated nutrients.
- Prepare a balanced lunch using locally available foods.
- Explain mindful eating in your own words.
- List five ways to reduce food waste.
- Why are seasonal foods sometimes a sensible choice?
- Record the food you eat in one day and identify the major food groups represented.
🔁 Quick Revision
| Concept | Remember |
|---|---|
| Nutrients | Useful components of food needed for body functions. |
| Carbohydrates | Main energy-giving nutrient group. |
| Proteins | Important for growth and repair. |
| Balanced diet | Appropriate variety and amounts of nutrients and other needed components. |
| Deficiency | Health problem caused by insufficient supply of a needed nutrient over time. |
| Mindful eating | Thoughtful choices, suitable portions, hygiene and attention to food. |
✅ Mastery Checklist
- ☐ I can identify major nutrients and their roles.
- ☐ I can describe simple food tests.
- ☐ I can explain balanced diet.
- ☐ I can connect nutrient deficiencies with disorders.
- ☐ I can explain mindful eating.
- ☐ I can suggest ways to reduce food waste.