This document discusses nutrition and food classification. It provides details on the main nutrients found in food - proteins, carbohydrates, fats, vitamins, minerals, and water. It explains their roles and best sources. Foods are classified by origin (animal or plant) and chemical composition. A balanced diet with grains, dairy, proteins, fruits and vegetables is recommended to provide needed nutrients, energy, and disease prevention. Maintaining a healthy lifestyle through proper nutrition is emphasized.

1. • Nazmol Alam- 131-29-497
• Obydulla- 131-29-500
• Asif hossain Anik- 131-29-501
• Jannatul Ferdousi Smrity- 131-29-502
• Wajib Mia Rajib- 131-29-503

2. NUTRITION
• Nutrients provide energy and materials for cell
development, growth, and repair.
• You need energy for every activity and to maintain a
steady internal temperature

3. 3
CLASSIFICATION OF FOODS
• Classification by origin:
• Foods of animal origin
• Foods of vegetable origin
• Classification by chemical
composition:
• Proteins
• Fats
• Carbohydrates
• Vitamins
• Minerals

4. Proteins
• Used for replacement and repair of body cells and for
growth
• Made up of amino acids
• Found in eggs, milk, cheese, and meat
• Essential amino acids must be supplied by food.

5. Carbohydrates
• The main source of energy for our body
• Made up of carbon, hydrogen, and oxygen atoms; energy
holds these atoms together
• Sugars are simple carbohydrates; starch and fiber are
complex carbohydrates.
• Sugars are found in fruits, honey, and milk.
• Starches are found in potatoes and pasta.
• Fiber is found in whole-grain breads, beans, and peas.

6. Fats
• Also called lipids
• Classified as unsaturated or saturated based on their chemical
structure
• Provide energy and help your body absorb vitamins
• Because fat is a good storage unit for energy, any excess energy
is converted to fat.
• Saturated fats are associated with high cholesterol.
• Maintain healthy skin
• Maintain body temperature
• Promote healthy cell function

7. Vitamins
• Needed for growth, regulating body
functions, and preventing disease.
• A well-balanced diet usually gives
your body all the vitamins it needs.
• Two groups:
• Water-soluble -B-complex and C
• Fat-soluble-A, D, E, and K
Minerals
• Are inorganic nutrients
• Regulate many chemical reactions
in your body
• Macro minerals are needed in
large amounts
• Sodium, calcium, phosphorus,
magnesium, potassium, sulfur,
chloride
• Trace minerals are needed in
small amounts
• Iron, zinc, manganese, copper,
iodine
• Excesses or deficiencies of trace
minerals can cause serious problems

8. Water
• Required for survival.
• Cells need water to carry out their work.
• Most nutrients your body needs must be dissolved in water.
• The human body is about 60 percent water.
• You lose water each day when you perspire, exhale, and get rid of
wastes.

9. • Best way to live a healthy life is to eat a
balanced diet.
• To provide nutrients that your body needs
to function.
• To give you more energy and alertness
throughout the day.
• To prevent future disease and sickness.
• Diabetes, obesity and cancer.

10. • Eat regular meals:
• Breakfast is the most important meal of the day
• Keeps body filled with fuel to get through the day
• Eat a variety of foods:
• Fruits and vegetables
• Try to eat more apples and grapes and less cookies and chips
(junk food)
• Cut down on high fat and sugar:
• Drink water or juice instead of soda

13. • Cereals, breads,
crackers and rice
• Supplies energy
through carbohydrates
• 6-11 servings daily
• How can you get the
right amount of grains?
• Bread in sandwiches
• Cereal and oatmeal
during breakfast
• Rice with dinner

14.  Important sources of proteins,
vitamins and minerals
 Rich in calcium
 Important for teeth and bones
 Milk, yogurt, cheese
 High in Fat
 Good sources if vitamins A and D

15. Primary source of protein in the
diet
Protein provides body with
dietary energy needed for
growth and repair
Meat, poultry (chicken), fish, eggs
and nuts
2-3 servings per day

16.  Eating foods with little fat can help with the
following:
 Healthy heart
 Keeping a low cholesterol level
 Reduce risk of heart disease when you are older
 Avoid junk food

17. FOOD PYRAMID

18. •“You are what you eat” that is what our elders would
normally remind the young ones since that is really
true. It is more than a phrase but it is a reminder for
us to eat right. It is important for us to recognize the
healthful properties of certain food. It is because
eating healthy food can help us prevent disease.
Nutrients provide the body with everything it needs to
grow and maintain healthy function.

19. SMRITY 2-5
ASIF 6-8
MAMUN 9-12
RAJU 13-15
NAZMOL 16-18