1. PRESENTATION ON
NUTRITION AND HEALTH
Submitted By:
Shubham Sharma

2. Introduction
Your body needs to stay healthy, and the key thing for health is
nutrition.
Nutrition is defined as the science of food and its relationship to health.
It is concerned primarily with the part played by the nutrients in the
body growth, development and maintenance.
The word Nutrient or food factor is used for specific dietary constituents
such as proteins, vitamins and minerals.

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. Different Types of Nutrients
• Proteins( Meat, Fish, Beans, Dairy products)
• Carbohydrates( Whole Wheat, Grains, Potato)
• Minerals
• Fats
• And the most important water

5. Nutrients
• Organic and inorganic complexes contained in food are called nutrients. They are
broadly divided into:
• Macronutrients:
-proteins
-fats
-carbohydrates
• Micronutrients:
-vitamins
-minerals

6. Proteins
• Large Molecules that contain carbon, hydrogen, oxygen, and nitrogen
• One molecule of protein is made of smaller units (building blocks)
called amino acids.
• Your body only needs 20 amino acids to produce thousands of protein
cells.
Functions of Proteins
• Body Building
• It repairs and maintains the body tissues
• It maintains osmotic pressure

7. Carbohydrates
• Main sources of energy for your body.
• The atoms are held together by energy. When the carbohydrate is broken down,
this energy is released for your body.
• There are three types of carbohydrates: sugar, starch and fiber. Sugar is a simple
carbohydrate, and starch and fiber are complex carbohydrates.
• The carbohydrate reserve (glycogen) of a human adult is about 500g. This reserve
is rapidly exhausted when a man is fasting. If the dietary carbohydrates do not
meet the energy needs of the body, protein and glycerol from dietary and
endogenous sources are used by the body to maintain glucose homeostasis.

8. Minerals
• Minerals are inorganic nutrients (nutrients that lack carbon and cause many
chemical reaction in your body).
• About 20 minerals are used in your body.
• Minerals send nerve impulses, build cells, regulate chemical reactions in cells,
and carry oxygen to body cells.

9. Vitamins
• Vitamins are a class of organic compounds categorized as essential
nutrients. They are required by the body in a very small amounts.
They fall in the category of micronutrients.
• Vitamins are divided in to two groups: fat soluble vitamins- A, D, E
and K and water soluble vitamins: vitamins of the B-group and
vitamin C.
• There are two groups of vitamins: Water Soluble and Fat Soluble.
Water soluble vitamins dissolve in water, so they are not stored in
your body. This means you have to take them daily. Fat soluble
vitamins are dissolved ONLY in fat.

10. Fats
• Fats are NOT negative. In fact, they provide energy and help your
body absorb vitamins.
• One gram of fat releases almost twice as much as energy than one
gram of carbohydrate does!
• Two group of fats: saturated and unsaturated. Unsaturated fats are
liquid at room temperature, and saturated fats are solids in room
temperature. Also, saturated fats have been associated with high
levels of blood cholesterol.

11. Water
• Water is essential. Different organisms need different amounts of
water to survive!
• The human body is about 60% water. You r body loses water by
perspiration. When you exhale, you lose water as water vapor. Then,
your nerves send a signal to your brain for water. This is why you feel
thirsty.

12. Calories
• If it wants to perform ANY activity, your body needs energy. That
energy comes from food. The energy available in food is measured in
Calories.
• For example there is a big difference in the amount of calories a slice
of pizza and a carrot contains. One gives more nutrition, and the
other gives more energy.

13. Cereals
• Cereals (e.g. rice, wheat) constitute the bulk of the daily diet. Rice is
the staple food of more than half the human race. Next to rice, wheat
is the most important cereal. Maize ranks next to rice and wheat in
world consumption. Maize is also used as food for cattle and poultry
because it is rich in fat, besides being cheaper than rice or wheat.

14. Conclusion
• This lecture deals with the basic nutrients which include proteins,
carbohydrate, fats, vitamins and minerals.
• The last slide show the practical application of how the nutrients are
present in our daily food and that to what percent cereals are
necessary a food.