NUTRITION IN HUMAN BEINGS:

NUTRITION IN HUMAN BEINGS:Other than plants, all the organisms in this world are consumer. Consumer cannot prepare their own food , they depend upon plants to get their food.So all the organisms other than plants are called as  heterotrophs . Human beings are also heterotrophs. Human beings mainly take six different types of food - they are  Protein, Carbohydrates, Fats , Vitamins, Minerals and water. Out of these six different types of food - Protein, Carbohydrates, Fats are called  complex food and other three Vitamins, Minerals and water are called simple food. Food are termed as complex and simple based on the digestion and absorption by the epithelial lining of the alimentary canal.

Even though our alimentary canal starts from mouth and ends in the anus  but there is specific site for the digestion of  each type of food. So out of six different types of food only complex food material, digestion is complicated process and we need to understand them very clearly to understand the whole  process of digestion.

Protein when get digested break down to form amino acids. Carbohydrates after digestion forms glucose and fructose and fats on digestion gives fatty acids and glycerol.

We also need to know, the source from where we get get our six components of food. 

We get Protein from - eggs, meat, fish , soybean, pulses , milk etc. 

Carbohydrates we get from  Rice, potato, maize , barley., wheat etc., 

Fats we get  from Oil, ghee, butter and all the milk products.

Minerals we get from Fruits, vegetables etc.

Vitamins from fruits, vitamins etc and  Water.

Along with these food we also need Roughage which provide us fibre for eliminating the waste from our body. Cabbage is the best example.

Now ,we also need to know function of each type food -

Protein builds our body and heals the wounds.

Carbohydrates give us energy to do our daily activites.

Fats serve as stored energy, When there is need of severe energy in the body then fats supply that energy.

Vitamins and Minerals protect our body from germs.

And water helps in transportation.

Theses are the basic knowledge in Digestion before we give our steps in knowing the mechanism of digestion in our body.

 

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