Energy and Food
Everything that is alive needs food. Those who do not
eat meat or fish are called vegetarian. Those who eat meat or fish or both are
called non vegetarian. Food that we eat either comes from plants or animals.
Why we need food?
- We cannot survive without
food as it gives energy for proper functioning of our body. Our body needs
energy all the time even when we are sleeping. Many organs function
continuously either we are working or relaxing.
- Food helps in prevention
and cure of disease.
Food contains nutrients that nourish our body.
Different foods we eat daily have different types of nutrients in different
quantities. These nutrients are carbohydrates, proteins, vitamins, fats, minerals.
No single food contains all the nutrients in the desired quantities so; we need
to eat balance diet for proper functioning of body.
A diet that have proper proportions of carbohydrates,
fats, proteins, vitamins, minerals, and water necessary to keep good health is
called balanced diet.
- Carbohydrates are one of
the main types of nutrients.
- Carbohydrates provide
energy for the body, mainly for the brain and the nervous system. We need
energy for all activities we do. (walk, dance, write, jump, walk etc.)
- Carbohydrates include
sugars found naturally in foods such as fruits (apples, banana and grapes),
vegetables (potato and pumpkin), milk, milk products, whole
grain breads and cereals (wheat, maize and rice), starchy vegetables, legumes
and refined sugar.
- Like carbohydrates, fats
also provide energy for the body. They act as reserve of energy when
carbohydrates are not available.
- It helps the body to
absorb certain vitamins that are fat soluble.
- It helps to keep body warm
by maintaining proper body temperature.
- Food rich in fats include
oil, butter, nuts, coconut, ghee, cheese, cream etc.
- It is important for the
maintenance and repair of the body. Children require more protein for their
growth. Protein is needed for good hair, skin, eyes, muscles and other organs
of the body.
- It is important element of
blood (hemoglobin present in blood is a protein) and help in transportation of
oxygen throughout the body.
- Protein rich foods include
meat, fish, cheese, beans, lentils, yogurt, nuts, and seeds.
- Vitamin helps to form and
maintain healthy teeth, bones and skin.
- It also helps form red
blood cells and maintains the nervous system.
- It helps to fight against
infection and diseases.
- Food rich in vitamins are broccoli,
papaya, almonds, sunflower oil, spinach, carrot, pumpkin, orange, beans etc.
- The body needs many
minerals such as calcium, iron, sodium, potassium and many others. We need all
minerals in to stay healthy in desired quantity.
- Our body needs calcium to
maintain healthy bones and teeth. Calcium we get from milk, milk products etc.
- Iron is also a mineral
which helps in the formation of blood. Iron rich food includes red meats, dried
fruits, green leafy vegetables.
- Dietary fiber or roughage
is the indigestible portion of food derived from plants. Fiber is obtained from
fruits, vegetables and the outer covering of cereals and pulses.
- Water and fiber help to
clean the digestive system by removing waste from the body.
- Water helps to regulate
the body temperature.
Milk is considered as a complete food as it contains
almost all nutrients that a body needs.
Energy need of the body depends on age, gender, body
size and composition. The people performing physical activity like players,
athletes require more energy.
to avoid junk food?
- They may cause digestive problem.
- It lacks essential nutrients such as vitamins,
to keep our body healthy?
- We should exercise regularly.
- We should eat healthy and balanced diet.
- We should drink at least 6-8 glass of water daily.
TopicsFood We Eat (nutrients)
Food We Eat (Sources)