In this health conscious age we are always bothered about what we should eat and what we should not. But little have we given thought to the foods that are a boon and ones that aren’t. Let’s see how different foods are used by the body.
Let us see first how food travels in our body
- In the mouth: food gets broken into small pieces and digestion of sugars takes place with help of enzymes in saliva
- In the food pipe it travels to the stomach
- In the stomach: further digestion takes place. Stomach produces acid that helps to kill bacteria and other germs that may get into food. The stomach makes an enzyme that starts digestion of protein and releases a molecule that helps with the absorption of vitamin B12.
- The small intestine is where most of the digestion and absorption of our food takes place. The long length of small intestine is needed so that enough space is available for our food to be broken down into the most elemental molecules so that it can then be absorbed. In the small intestine, Proteins, fats and sugars (carbohydrates) are digested by enzymes released by the pancreas.
- Bile is essential for complete fat digestion and for the digestion of fat-soluble vitamins A, D, E, and K. Once the sugars that we eat have been partially broken down by the enzymes of the pancreas, cells lining the small intestine use their own enzymes to fully digest the sugars.
- After digestion all nutrients get absorbed by the small intestine.
- Once nutrients are absorbed by the intestine, they pass into the blood stream and are carried to the liver. The liver also gets rid of the byproducts of drugs and the nutrients we don’t need in bile.
- The large intestine, also called the colon, is not responsible for digestion. Instead, its purpose is to complete water and electrolyte (minerals found naturally in the body, such as potassium, calcium, sodium, and magnesium) absorption begun by the small intestine. Those components of food that are not needed or cannot be absorbed are excreted from the colon in stool.
- The excess water is taken to the kidneys where essential nutrients are absorbed and waste is excreted through the urine.
Sources of proteins fats and carbohydrate
|Poultry ,fish, beans, milk, eggs||Oil, ghee, cream. butter, cheese, red meat||Grains, cereal, sugars etc||Green leafy vegetables and fruits etc||Dry fruits, fish oil, olive oil etc|
Effects of different foods on our bodies
Below is shown what the end product of taking different foods…is.
1. Proteins—–amino acids—–muscles
2. Too much Carbohydrates—–sugar—–fat
3. Fibrous foods—-fiber—-well being
4. Nuts—-anti oxidants—-good cholesterol
5. Fried junk food—-fatty acids—–fat