CBSE Class 6 Science Revision Notes Chapter 3: Mindful Eating – A Path to a Healthy Body

Mindful eating means choosing wholesome food in suitable amounts while understanding its nutrients, source and value. In the CBSE Class 6 Science chapter, healthy eating includes a balanced diet, local food, millets and minimum food waste.

Food gives us energy, supports growth, repairs the body and protects us from diseases. However, food habits differ across India because crops, climate, culture, taste and traditions vary from region to region.

These CBSE Class 6 Science Revision Notes Chapter 3 cover the current 2026–27 chapter. Use them to revise food components, deficiency diseases, nutrient tests, balanced diets, millets and food miles.

Key Takeaways

  • Five major nutrients: Carbohydrates, fats, proteins, vitamins and minerals form the major nutrients in food.
  • Balanced diet: It contains essential nutrients, roughage and water in the right amounts.
  • Three food tests: Iodine detects starch, an oily patch indicates fat and violet colour indicates protein.
  • Food miles: The distance travelled by food from its producer to the consumer is called food miles.

Access Class 6 Science Chapter 3 Mindful Eating Notes in 30 Minutes

Revise the chapter in three parts:

  • First 10 minutes: Food diversity, culinary practices and components of food
  • Next 10 minutes: Nutrients, deficiency diseases, roughage and food tests
  • Final 10 minutes: Balanced diet, junk food, millets, food miles and food waste

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Food Diversity in Class 6 Science Chapter 3 Notes

People do not eat the same food at every meal. Food choices also differ among families, communities and regions.

India has diverse soil and climatic conditions. Therefore, different crops grow in different parts of the country.

Food in Different Regions of India

Traditional food in a state is usually connected to the crops grown there.

State Locally Grown Crops Traditional Food and Beverages
Punjab Maize, wheat, chickpea and pulses Makki di roti, sarson da saag, paratha, lassi and chhach
Karnataka Rice, ragi, urad and coconut Idli, dosa, sambhar, ragi mudde, coconut chutney and buttermilk
Manipur Rice, bamboo and soya bean Rice, eromba, utti, singju, kangsoi and black tea

Some food items are common across many states. Other dishes may belong mainly to one region.

Why Does Food Differ Across India?

Food choices may vary because of:

  • Crops cultivated in the region
  • Soil type
  • Climatic conditions
  • Taste preferences
  • Culture
  • Local traditions

For example, ragi is widely used in Karnataka because it is grown in the region. Maize and wheat are common ingredients in many traditional foods of Punjab.

Culinary Practices in Mindful Eating Revision Notes

The methods used to prepare and cook food are called culinary practices.

Culinary practices have changed over time because of technology, transport and communication.

Traditional and Modern Culinary Practices

Earlier Practice Modern Practice Main Change
Food cooked on a chulha Food cooked on a gas stove Faster and easier cooking
Ingredients ground on a sil-batta Ingredients ground in an electrical grinder Less physical effort
Locally available tools used Electrical appliances used Greater convenience
Fewer transported ingredients Ingredients available from many regions Improved transportation

Traditional practices remain important in many families. Modern tools have mainly changed the speed and ease of food preparation.

Components of Food in Class 6 Science Chapter 3

Food contains substances that perform different functions in the body. These substances include nutrients, dietary fibre and water.

The major nutrients are:

  • Carbohydrates
  • Fats
  • Proteins
  • Vitamins
  • Minerals

Carbohydrates

Carbohydrates are primary sources of energy. Glucose is a carbohydrate that provides quick energy.

Common sources include:

  • Wheat
  • Rice
  • Maize
  • Bajra
  • Potato
  • Sweet potato
  • Banana
  • Mango
  • Pineapple
  • Sugarcane

Common sugar is also a type of carbohydrate.

Fats

Fats provide stored energy. They may come from plant or animal sources.

Sources of fat include:

  • Groundnuts
  • Walnuts
  • Almonds
  • Coconuts
  • Pumpkin seeds
  • Sunflower seeds
  • Sesame seeds
  • Butter
  • Curd
  • Ghee
  • Cooking oils

Carbohydrates and fats are called energy-giving foods because they provide energy for daily activities.

Proteins

Proteins support growth and repair damaged body tissues. Growing children need sufficient protein for proper development.

Plant sources of protein include:

  • Pulses
  • Beans
  • Gram
  • Moong
  • Peas
  • Soya bean
  • Nuts

Animal sources include:

  • Milk
  • Paneer
  • Eggs
  • Fish
  • Meat

Protein-rich foods are called body-building foods.

Vitamins and Minerals

Vitamins and minerals protect the body from diseases and support important body functions.

They are required in smaller amounts than carbohydrates, fats and proteins. However, their presence is essential for good health.

They are also called protective nutrients.

Vitamins and Minerals in Class 6 Science Chapter 3 Notes

Different vitamins and minerals perform different functions. Their prolonged deficiency may cause diseases or disorders.

Nutrient Main Function Sources Deficiency Disease or Disorder Main Symptoms
Vitamin A Keeps eyes and skin healthy Papaya, carrot, mango and milk Loss of vision Poor vision in darkness
Vitamin B1 Supports the heart and body functions Legumes, nuts, whole grains, seeds and milk products Beriberi Swelling and burning sensation in hands or feet
Vitamin C Helps the body fight diseases Amla, guava, green chilli, orange and lemon Scurvy Bleeding gums and slow wound healing
Vitamin D Helps the body absorb calcium Sunlight, milk, butter, fish and eggs Rickets Soft and bent bones
Calcium Keeps bones and teeth healthy Milk, soya milk, curd, cheese and paneer Bone and tooth decay Weak bones and tooth decay
Iodine Supports physical and mental activities Seaweed, singhada and iodised salt Goitre Swelling at the front of the neck
Iron Forms an important component of blood Green leafy vegetables, beetroot and pomegranate Anaemia Weakness and shortness of breath

Scurvy and Vitamin C

Scurvy is caused by a deficiency of Vitamin C. Its symptoms include bleeding gums and slow healing of wounds.

Citrus fruits such as lemons and oranges provide Vitamin C.

Goitre and Iodised Salt

Goitre may occur because of iodine deficiency. A swelling develops at the front of the neck.

Iodised salt is common salt mixed with the required amount of iodine salts. Its use helps prevent iodine deficiency.

Why Do Deficiency Diseases Develop?

A deficiency disease may develop when the body lacks a nutrient for a long period.

Eating a variety of food helps provide different nutrients. A single food item may not supply every nutrient needed by the body.

Roughage and Water in Mindful Eating Revision Notes

Nutrients alone do not form a complete healthy diet. The body also requires dietary fibre and water.

Dietary Fibre or Roughage

Dietary fibre is also called roughage. It does not provide nutrients, but it remains an essential part of food.

Roughage helps the body:

  • Remove undigested food
  • Maintain smooth passage of stools
  • Reduce constipation

Sources of roughage include:

  • Green leafy vegetables
  • Fresh fruits
  • Whole grains
  • Pulses
  • Nuts

Water

Water is an essential part of our diet.

It helps the body:

  • Absorb nutrients from food
  • Remove waste through urine
  • Remove waste through sweat
  • Perform normal body functions

We should drink sufficient water regularly.

How Cooking Can Affect Nutrients

Cooking makes many foods soft and suitable for eating. However, excessive heat may destroy some nutrients.

Vitamin C and certain other nutrients may be lost during cooking at high temperatures.

Washing vegetables after cutting or peeling may also remove some vitamins. Fruits and vegetables should be washed thoroughly before they are cut.

Fresh fruits and suitable uncooked vegetables can provide nutrients that may be reduced during cooking.

Food Tests in Class 6 Science Chapter 3 Notes

Simple tests can detect starch, fat and protein in food. Other nutrients may require testing in a properly equipped laboratory.

Test for Starch

Starch is a type of carbohydrate.

Materials required: Food sample, diluted iodine solution, dish and dropper

Steps:

  1. Place a small amount of the food on a dish.
  2. Add two or three drops of diluted iodine solution.
  3. Observe the colour change.

Observation: The food turns blue-black.

Conclusion: A blue-black colour shows the presence of starch.

Potato, bread and boiled rice may show a positive starch test.

Test for Fat

The fat test uses a clean piece of paper.

Steps:

  1. Place a small amount of food on the paper.
  2. Wrap the paper around it and press gently.
  3. Allow the paper to dry if the food contains water.
  4. Hold the paper against light.

Observation: An oily or translucent patch remains on the paper.

Conclusion: The oily patch indicates the presence of fat.

Butter, oil, groundnut and coconut may show a positive fat test.

Test for Protein

The protein test uses copper sulfate and caustic soda solutions. It should be performed or demonstrated under a teacher’s supervision.

Steps:

  1. Make a paste or powder of the food sample.
  2. Place half a teaspoon in a clean test tube.
  3. Add two or three teaspoons of water.
  4. Add two drops of copper sulfate solution.
  5. Add about ten drops of caustic soda solution.
  6. Shake the test tube and leave it undisturbed.

Observation: The mixture turns violet.

Conclusion: A violet colour indicates the presence of protein.

Peas, soya bean and peanuts may show the presence of protein.

Precautions During the Protein Test

  • Do not touch the chemicals directly.
  • Do not taste or smell the chemicals.
  • Wash the affected area immediately if a chemical spills on the body.
  • Perform the activity under a teacher’s supervision.

Quick Food Test Table

Food Component Testing Material Positive Observation
Starch Iodine solution Blue-black colour
Fat Paper Oily translucent patch
Protein Copper sulfate and caustic soda Violet colour

One food item may contain more than one nutrient. Peanuts, for example, may contain both protein and fat.

Balanced Diet Notes for Class 6 Science

A balanced diet contains all essential nutrients, roughage and water in the right amounts.

It supports proper growth, development and normal functioning of the body.

Does Everyone Need the Same Diet?

Nutritional requirements vary among people.

The type and amount of nutrients required may depend on:

  • Age
  • Gender
  • Physical activity
  • Health condition
  • Lifestyle

A growing child and an elderly person may need different quantities of certain nutrients. A sportsperson may require more energy and protein than someone with low physical activity.

Components of a Balanced Diet

A balanced diet should provide:

  • Carbohydrates for energy
  • Fats for stored energy
  • Proteins for growth and repair
  • Vitamins and minerals for protection
  • Roughage for smooth removal of undigested food
  • Water for absorption and waste removal

No single food item usually provides every component in the required amount. A balanced diet contains different food items.

Junk Food and Packaged Food Labels

Some foods contain high amounts of sugar and fat but very little protein, vitamins, minerals and fibre.

Such foods are called junk foods.

Examples include:

  • Potato wafers
  • Candy bars
  • Carbonated drinks

Eating junk food frequently may contribute to obesity and other health problems.

Comparing Potato Wafers and Roasted Chana

A food label can help compare nutrients in packaged foods.

Roasted chana may contain more protein and dietary fibre than potato wafers. Potato wafers may contain considerably more fat.

This makes roasted chana a more suitable regular snack than potato wafers.

Fortified Foods

Sometimes nutrients are added to food during processing. This process is called fortification.

Iodised salt is an example of fortified food. Certain baby foods may also be fortified.

Role of FSSAI

The Food Safety and Standards Authority of India regulates food quality in India.

Packaged food items must display nutritional information. This information shows the quantity of nutrients present in the food.

Millets: Nutrition-Rich Cereals

Jowar, bajra, ragi and sanwa are millets. These small grains have formed part of Indian diets for centuries.

Millets can grow under different climatic conditions. They provide vitamins, minerals and dietary fibre.

For this reason, they are also called nutri-cereals.

Millet Common Name or Use
Jowar Sorghum
Bajra Pearl millet
Ragi Finger millet
Sanwa Barnyard millet

Millets contribute to a balanced diet. However, eating only millets cannot fulfil every nutritional requirement.

They should form part of a varied diet containing pulses, vegetables, fruits and other suitable foods.

Local and Plant-Based Food

Locally grown food often travels a shorter distance before reaching consumers.

Eating local and plant-based food, where possible, can:

  • Support local farmers
  • Keep food fresh
  • Reduce transport costs
  • Reduce pollution caused by transportation
  • Provide a variety of plant nutrients and fibres

Food choice should still remain balanced and suitable for a person’s nutritional needs.

Food Miles in Class 6 Science Chapter 3 Summary Notes

The complete distance travelled by food from its producer to the consumer is called food miles.

A chapati reaches the plate after several stages.

Journey of Chapati from Farm to Plate

  1. A farmer grows wheat.
  2. Mature wheat is harvested.
  3. Grains are separated through threshing and winnowing.
  4. The grains are stored.
  5. Wheat is transported for grinding.
  6. Flour is packed.
  7. It is transported to a shop.
  8. The flour is bought and used to prepare chapati.

Each step requires human effort, time, storage and transport.

Why Should Food Miles Be Reduced?

Reducing food miles can:

  • Lower transport costs
  • Reduce pollution
  • Keep food fresher
  • Support local producers

Buying locally produced food can help reduce the distance it travels.

Respecting Food and Reducing Food Waste

Farmers and many other community members work to bring food from farms to our plates.

Wasting food also wastes the water, land, labour, storage and transport used to produce it.

We can reduce food waste by:

  • Taking only as much food as we can eat
  • Storing food properly
  • Sharing usable extra food
  • Planning portions carefully
  • Respecting the effort involved in food production

The chapter’s message is simple: eat healthy, share and respect food.

Coluthur Gopalan and Nutrition Research in India

Coluthur Gopalan was an Indian scientist who led important nutrition research.

He analysed more than 500 Indian foods for their nutritional value. He also recommended diets suitable for the Indian population.

His research identified deficiencies in protein, energy and other food components. Such work supported nutrition programmes for schoolchildren.

The Mid Day Meal Programme began nationally in 2002. It now continues as the PM POSHAN initiative in government and government-aided schools.

Quick Revision Table for Class 6 Science Chapter 3

Concept Meaning Key Point
Nutrient Useful food component needed by the body Includes carbohydrates, proteins, fats, vitamins and minerals
Carbohydrate Primary source of energy Rice and wheat
Fat Source of stored energy Oil and nuts
Protein Supports growth and repair Pulses and eggs
Protective nutrients Vitamins and minerals Protect the body and support functions
Roughage Dietary fibre Helps remove undigested food
Balanced diet Diet with nutrients, roughage and water Quantities vary by individual
Deficiency disease Disease caused by prolonged nutrient deficiency Scurvy and rickets
Junk food High in sugar or fat and low in important nutrients Wafers and carbonated drinks
Millet Small nutrition-rich grain Ragi and bajra
Food miles Distance from producer to consumer Lower distance reduces transport impact
Fortification Addition of nutrients during processing Iodised salt

Important Terms from Mindful Eating

Culinary practices: Methods used for cooking and preparing food.

Nutrients: Food components that provide energy, support growth, repair the body and protect it.

Carbohydrates: Nutrients that provide energy.

Fats: Nutrients that provide stored energy.

Proteins: Nutrients required for growth and repair.

Vitamins: Protective nutrients required in small amounts.

Minerals: Nutrients that support functions such as blood formation and bone health.

Roughage: Dietary fibre that helps remove undigested food.

Deficiency disease: A health problem caused by prolonged shortage of a nutrient.

Balanced diet: A diet containing nutrients, roughage and water in suitable amounts.

Millets: Small, nutritious grains such as jowar, bajra and ragi.

Food miles: The distance travelled by food from production to consumption.

Useful Links for Class 6 Science

Section Useful Links
Syllabus CBSE Class 6 Science Syllabus
Revision Notes CBSE Class 6 Science Revision Notes
Science Notes CBSE Class 6 Science Revision Notes Chapter 1
NCERT Solutions NCERT Solutions Class 6 Science
Sample Papers CBSE Sample Papers for Class 6 Science
Important Questions Important Questions Class 6 Science
NCERT Books NCERT Books for Class 6 Science
Class 6 Support CBSE Class 6 Syllabus

FAQs (Frequently Asked Questions)

Iodine specifically shows a blue-black colour in the presence of starch. Sugar is a carbohydrate, but it is not starch. Therefore, a sugar sample does not give the same colour change.

Yes, one food item can contain several nutrients. Peanuts contain both protein and fat. A food test identifies the components being tested, but it does not prove that no other nutrients are present.

Washing vegetables after cutting may remove some water-soluble nutrients. Washing them thoroughly before cutting removes dirt while reducing unnecessary nutrient loss.

Fresh fruit provides dietary fibre along with vitamins, minerals and water. Processing may reduce some nutrients, while packaged juice may also contain added sugar. Fresh fruit therefore provides more complete food value.

No, millets alone cannot supply every nutrient in the required amount. They are rich in fibre, vitamins and minerals, but a balanced diet also needs proteins, fats, vegetables, fruits and sufficient water.