Monday 24 October 2011

Some of the science about nutrition and interesting facts :-





Do you know why you need to eat?

Do you ever think about why you eat? The easy answers are because you are hungry tired and your stomach is telling you that you're hungry. Sometimes you might also eat because you are bored, sad etc. just because it's lunchtime, or because the food you want to eat looks so good.
Those are some of the emotional and physical reasons why you eat, but do you ever put much thought into why your body needs food? Not just any food  but healthy, good for you food- Why is good nutrition important? Throughout this post i will tell you some of the reasons why.


Good Nutrition Provides Energy

The foods you eat provide the energy your body needs to function. Just like you need to put fuel in your car, your body needs to be fed energy-providing foods every day. The main form of energy for your body is carbohydrates.
Your body has the easiest time digesting carbohydrates like sugar and starch. Carbohydrates are broken down into individual glucose, fructose or galactose units. Glucose is your body's favorite form of energy. If you don't get enough carbohydrates, your body can make glucose from protein or fat, and if you get too many carbohydrates, your body is very good at storing them as fat.

Good Nutrition Provides Raw Materials

Protein in the foods you eat is broken down into individual amino acids. Your body uses the amino acids to build and repair the different parts of your body. Your muscles contain lots of protein, and you need to restock that protein through your diet. Your body also needs protein for parts of your immune system, hormones, nervous system, and organs.
Another raw material your body needs is Calcium . Calcium has several functions in your body but it's best known as the mineral that is stored in your bones and teeth. You need calcium from your diet to keep your bones and teeth strong.
Your body also needs fats to be healthy. Membranes that contain fats surround all the cells of your body. Your brain has fatty acids, and fats are also needed to signal hormones.

The "Little Helpers"

Vitamins and minerals you get from your diet are just as important as carbohydrates, protein and fats however, you only need them in small amounts. Vitamins and minerals usually function as co enzymes, which means they help chemical reactions in the body happen a lot faster. For example, many of the B complex vitamins help your body burn carbohydrates for energy. Vitamin is needed for vision, zinc is involved in many  processes, and vitamin helps keep connective tissue strong and your immune system functioning.
Your diet needs to provide good amounts of all of these "little helpers." A healthy, balanced diet will provide you with lots of vitamin and minerals. An unhealthy diet may make your body deficient in one or more of these helpers.

 A lot of the above was copied and pasted but put into my own words carefully.

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