What are the functions of food?

Postby pebbleswa » Tue Dec 28, 2004 3:01 pm

Carbohydrate: (1g of carbohydrate is equivalent to 4 kcal)

What does it do?
• Provides energy for basic functions and all muscular work

What foods contain it?
• Fruits
• Vegetables
• Pasta
• Potatoes
• Rice
• Bread
• Milk

How much do you need?
• 60-70 percent of your dietary intake or about 1/10 oz a day per lb (6g a day per kg) of body weight.
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Postby Anonymous Bot » Tue Dec 28, 2004 3:01 pm

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Postby pebbleswa » Tue Dec 28, 2004 3:03 pm

Protein: (1g of carbohydrate is equivalent to 4 kcal)

What does it do?
• Supports cell maintenance

What foods contain it?
• Meat
• Fish
• Milk
• Cheese
• Pulses
• Nuts
• Seeds

How much do you need?
• 15 percent of your dietary intake
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Postby pebbleswa » Tue Dec 28, 2004 3:05 pm

Fat: (1g of carbohydrate is equivalent to 9 kcal)

What does it do?
• Provides energy stores for muscular work and the transportation of vitamins

What foods contain it?
• Oils
• Butter
• Nuts
• Seeds
• Avocados
• Whole Milk
• Cheese

How much do you need?
• 15-25 percent of your dietary intake
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Postby pebbleswa » Tue Dec 28, 2004 3:07 pm

Water:

What does it do?
• Maintains all bodily functions: our total body weight consists of 50-70 percent water.

What foods contain it?
• Water is the main ingredient in most drinks but beware of extra calories in sweetened drinks

How much do you need?
• At least 4 pints (2L) a day, but more if it is hot or you are very active
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Postby pebbleswa » Tue Dec 28, 2004 3:12 pm

Fiber: (soluble and unsoluble)

What does it do?
• Helps the stomach and bowels work efficiently.

What foods contain it?
• Fruits
• Vegetables
• Unrefined carbohydrates (such as brown rice and whole meal bread)

How much do you need?
• A diet rich in unrefined carbohydrates provides sufficient fiber
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Postby pebbleswa » Tue Dec 28, 2004 3:17 pm

Trace Elements (Vitamins and minerals)

What does it do?
• Serve as messengers and catalysts: although tiny amounts are needed, deficiencies cause disease.

What foods contain it?
• Invisible but present in most food; eating a wide range of foods is the best way to get all you need.

How much do you need?
• Requirements vary enormously: vitamins and minerals have recommends daily allowances (RDAs) for the minimum amount required to prevent disease.
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Postby Kisten » Mon Feb 15, 2010 10:29 am

1. Growth: Food is essential for growth. Without food a living organism will stop growing. The living cells in our body multiply after getting nourishment from the food we eat. Insufficient or a wrong type of food does not help healthy growth.
2. Repair: Living organisms sometimes damage their parts by accident. Constant work also causes wear and tear of the body parts. If we get a wound or cut, it heals up after some time. If we damage our skin due to some burn etc., it regains its shape in due course. The body needs food for all these functions.
3. Energy: We spend our energy when we do work. That is why after doing considerable work, we get tired. We then need food and rest to regain the lost energy. If we do not get food, we would become weak.
4. Protection from Diseases: We need to protect our body from diseases and keep it healthy. For this, we need vitamins and mineral salts in our food. Vitamins neither provide energy nor do they repair or replace the worn-out parts. But they are essential for our proper health.
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