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Energy Transformation in Daily Life |
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General ideas Tips for a healthy diet Calories in food
Healthy eating is a key component to maintaining good health.
• What you eat
• How much you eat
• How your body uses that food
What and how much you eat: healthy diet structure

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Calorie consumption is decided by the food choices and portion size. The well-known food guide pyramid simply illustrates the structure of a healthy diet. You’d better start with a wide and solid base (say, plant-based foods like grains, vegetables, fruits, and legumes) and then add more layers with smaller quantities toward the tip, for example, foods of animal origin provide important addition, but are consumed in smaller amounts.
A handy guide for determining portion or serving size can be found at the U.S. Department of Agriculture web site.
You can also get a quick estimation of what and how much you need to eat from the following website. If you are interested, you can enter your age, sex, height, weight, and level of physical activity to get a personal eating plan.
1) You do need proper amount of staple food, which most consists of carbohydrates.
An optimum level of carbohydrates may help to prevent your body fat accumulation; and the dietary fibre, which is also a carbohydrate, helps the bowel to function correctly.
![Pastas and whole-grain breads contain complex carbohydrates, which are long strands of glucose molecules. Nutritionists recommend that 55–60 percent of calories come from carbohydrates, and especially complex carbohydrates. [Photograph by James Noble. Corbis. Reproduced by permission.]](main_files/image003.jpg)
www.faqs.org/nutrition/Ca-De/Carbohydrates.html
2) More Fruits and Vegetables
Fresh fruit and vegetable salads are easy for the stomach, providing a feeling of fullness with no fat and only a small number of calories. They are also an excellent source of vitamins, minerals, fiber and other nutrients.
The key to what you should eat in any season is very simple: those seasonal produced and locally available fruits and vegetables are always fresh and undoubtedly should be the best recommended.

[1] http://newsletter.wsu.edu/eplay/user_pics/375x250_veggies.jpg
[2] http://www.answers.com/topic/healthy-diet
[3] http://img.dailymail.co.uk/i/pix/2006/06/Juices190606_593x600.jpg
[4] www.healthysuccessonline.com/proteindiet.shtml
3) Refuse fried food and fast food: Fast but rich in fat, as well as sugar and calories.
4) Even too much of a good thing can be bad for you: Individual choice and portion size should be considered.
5) Make the healthy way as your lifestyle habits: even small but fundamental and lifelong changes do have effects.
General idea on calorie level in food
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Higher |
Lower |
|
Ingredients |
Higher fat and sugar |
Low fat but high fiber and vitamins |
|
Status of food |
Dried/canned/pickled food |
Fresh food |
|
Source of food |
Fast and convenient food |
Homemade food |
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Cooking strategy |
Fried, roasted and baked |
Steamed and braised |
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Parts of the meat |
Skin and fat |
Lean meat |
Calories in daily food
Here is a useful website for you to find calories in certain food: http://www.annecollins.com/calories/index.htm
As some of the examples as below:
|
Food |
Calories |
|
Bread, rye, 1 slice |
85 |
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Bread, whole wheat, 1 slice |
65 |
|
Fresh whole milk, 1 cup |
150 |
|
Fresh milk fat-free/skimmed, 1 cup |
85 |
|
Soy milk, 1 cup |
90 |
|
Bacon, raw, 1 medium slice (21g) |
125 |
|
Beef brisket 3oz, lean only, braised |
205 |
|
Chicken leg 3oz, meat only, roasted |
180 |
|
Cod 3oz, steamed |
90 |
|
Food |
Calories |
|
Yogurt, regular, plain, 1 cup |
180 |
|
Yogurt, fat-free, plain, 1 cup |
110 |
|
Yogurt, fat-free, fruit-flavored, 1 cup |
150 |
|
Apple, medium |
60 |
|
Banana, medium |
80 |
|
Dates, 4oz |
214 |
|
Grapefruit, half |
40 |
|
Lemon, medium |
15 |
|
Orange, medium |
50 |
|
Mango, 4oz |
75 |
Calories in snacks
Your stomach is murmuring, but the time for dinner is far away. You turn to eye the cookies on the counter, but hate to feel guilty if you indulge yourself. Actually you don't need to avoid snacks, only if you can plan them with variety, moderation and balance in mind.
|
Approximate number of calories |
Healthy snack options |
|
10 calories |
1 large stalk of celery |
|
25-30 calories |
1 cup raw
vegetables |
|
60 calories |
2 cups air-popped or
light popcorn |
|
100 calories |
1 cup sliced bananas
and fresh raspberries |
|
150 calories |
1/2 cup frozen,
low-fat yogurt topped with 1/2 cup blueberries |
|
200 calories |
1/4 cup dry roasted
soy nuts (calories vary by brand) |
Source: Department of Agriculture — Nutrient Data Laboratory, 2005