Calorie is a unit of measurement by means of which the amount of energy produced in the human body by different kinds of food is calculated.
Calories [1] are not nutrients but simply units of measurement that determine the energy value of food. One calorie, when used as a dietary unit, is the amount of heat needed to raise the temperature of one kilogram of water by one degree centigrade.
A person’s calorie needs depend on his activity and such other factors as age and body build. A man doing very heavy work may need as much as 3,500 calories daily. An elderly, inactive woman may need less than 2,000 calories.
If the food you eat supplies more calories than you need, the excess is stored as fat. You gain about 0.45kg for every 3,500 calories in excess of your needs.
Many people control their weight by counting up their daily calorie intake. The number of calories supplied by average servings of all kinds of foods has been determined; a boiled egg, for instance, supplies about 80 calories, and a pat of butter, about 100 calories.
The caloric values of food must be considered in planning diet. Young persons need more calories and older ones fewer. If your diet supplies more calories than required, the result may be obesity.
Carbohydrates, obtained from starchy foods such as bread and potatoes, provide most of our energy. They supply between 40 and 50 percent of the calories needed each day. Fats provide about 35 to 40 percent, and the remainder is supplied by proteins, from food such as meat, fish and cheese, which build new body tissues.
Fats are the most concentrated source of calories and can supply twice as much energy as can a similar weight of carbohydrates or protein. As long as the correct balance of carbohydrates, fats and proteins is maintained, the most important aspect of planning a daily intake of food is to ensure that it contains the right number of calories to meet your individual calorie requirement.
If you are concerned about excess weight and know that it is not caused by any functional disorder of your body, you can easily set up a regime of regular exercise combined with dieting that should result in a slow but steady weight loss.
Before you plan your diet, you should know what types of food are high in calories and fattening so that you can avoid them as much as possible.
Generally, all foods that are rich in fat are fattening. These include:
Butter, margarine, cream
Certain cheese
Oils, salad dressings, mayonnaise
Food fried in deep fat
Ice cream
Nuts
Chocolate
Fatty meat
Foods that are heavy in starch or sugar are equally fattening. The chief ones are:
Potatoes
Bread, crackers
Cookies, cake, pastries, candy
Rice
Noodle, macaroni
Carbonated drinks
Alcoholic drinks
On the opposite side of the caloric scale, there are many nourishing foods that will add minimal number of calories to your diet:
Eggs
Lean meat
Skim milk and all skim-milk products
Fresh fruits
Vegetables
Please note that the way food is prepared may add calories to your diet. A boiled egg has about 77 calories; fried, it has 110 calories. A half-cup of boiled potatoes equals 55 calories; when fried, it has about 150 calories.
High calorie foods are usually rich in fat or contain large amounts of carbohydrates or protein that have the same number of calories per gram. Your body requires a certain number of calories in order to function efficiently. If your diet provides too few calories, your body will begin to consume its stored proteins and fats in order to supply the energy it needs.
If you eat more calories than your system can use, however, your body will store the excess food as fat.
The amount of calories you need is determined by your body size and the kinds of daily activities in which you participate. For example, a six-foot-tall footballer obviously needs more calories than a five-foot-tall chess player.
Men generally need more calories than women. Active children and growing teenagers must have them in abundance.
If you feel that you are too heavy, or not heavy enough, you can adjust your caloric intake to compensate for the discrepancy. Check your weight using our Ideal Weight Calculator. If there’s a marked difference between your actual weight and the desirable weight given for a person of your gender, height and age, you should consider going on a diet.
If after checking your weight and you decide that you need to lose weight in an effective manner, this sample 3-day menu [2] will cut your calories intake to 1,000 per day and still provide all necessary nutrients:
DAY 1
MEAL | FOOD | NUTRIENTS |
Breakfast
| • 1 cup fat-free or 1% cottage cheese • 1 cup blueberries | 240 calories 28 g protein 26 g carbohydrate 4 g fiber |
Lunch | • 4 ounces baked or grilled chicken breast (or 1 cup diced breast meat) • 1 cup fresh or frozen green beans, steamed • ⅓ cup steamed brown rice | 290 calories 40 g protein 23 g carbohydrate 5 g fiber |
Snack | • Kashi TLC Chewy Granola bar | 140 calories 7 g protein 20 g carbohydrate 4 g fiber |
Dinner |
• Chinese Chicken Salad • 3 cups romaine lettuce, chopped • ½ cup cilantro leaves, shredded • ¼ cup scallions, chopped • 2 tablespoons almonds, sliced or slivered • 3 ounces chicken breast, roasted and cubed • 1 tablespoon Trader Joe’s Lemon Ginger Sesame Dressing or Newman’s Own Lighten Up Sesame Ginger Vinaigrette |
290 calories 32 g protein 19 g carbohydrate 5 g fiber |
Snack | • 1 medium fresh peach (about 3 ounces) | 40 calories 1 g protein 11 g carbohydrate 2 g fiber |
Total Calories for the Day | 1,000 calories 108 g protein 100 g carbohydrate 20 g fiber |
DAY 2
MEAL | FOOD | NUTRIENTS |
Breakfast | Granola Berry Yogurt • 1 cup fat-free plain Greek style yogurt • ½ cup blueberries or sliced strawberries • ½ cup Kashi GoLean high protein, high fiber cereal (6 to 8 g protein in ½ cup) | 235 calories 20 g protein 42 g carbohydrate 8 g fiber |
Lunch | Grilled Chicken and Pineapple Sandwich • 4 ounces skinless, boneless chicken breast • ½ teaspoon salt • ¼ teaspoon freshly ground black pepper • ¼ cup fresh lime juice (about 2 limes) – brush chicken and pineapple with juice while cooking • ½-inch-thick slice pineapple, grilled (mango is good too) • 1 medium whole-wheat hamburger bun, toasted • 2 large basil leaves | 290 calories 30 g protein 30 g carbohydrate 4 g fiber |
Snack | ||
Dinner | Maple-lemon Glaze Grilled Salmon with Vegetable Stir-fry and Cous Cous • 5 ounces salmon (best if wild) • 10-minute marinade, about 1 tablespoon each of: - lemon juice - 1ight maple syrup - cider vinegar (with no salt added) • ½ cup fresh or frozen green beans • ½ cup sliced red peppers • ½ cup broccoli or cauliflower florets • ⅓ cup whole-wheat cous cous | 390 calories 47 g protein 23 g carbohydrate 5 g fiber |
Snack | • 1 medium fresh peach (about 3 ounces) • ½ cup fat-free plain cottage cheese | 100 calories 15 g protein 15 g carbohydrate 2 g fiber |
Total Calories for the Day | 1,015 calories 112 g protein 110 g carbohydrate 19 g fiber |
DAY 3
MEAL | FOOD | NUTRIENTS |
Breakfast | Eggs and Bacon • 2 large eggs, poached, or scrambled or fried using olive oil cooking spray • 1 slice Canadian bacon (1 ounce) • ½ whole-wheat English muffin | 290 calories 21 g protein 15 g carbohydrate 2 g fiber |
Lunch | • Wendy’s small chili or 1 cup Campbell’s Roadhouse Beef and Bean Chili Soup • ½ whole-wheat English muffin • Add ½ cup fresh or frozen green beans | 300 calories 21 g protein 38 g carbohydrate 10 g fiber |
Snack | ||
Dinner |
Ancho-rubbed Flank Steak with Roasted Vegetables • 4 ounces flank steak rubbed and pan fried with light olive oil • Ancho Rub: - ½ teaspoon brown sugar - ½ teaspoon ancho chili powder - ¼ teaspoon ground cumin • Roasted vegetables: - 1 zucchini, thickly sliced - ½ cup cherry tomatoes - 1 cup sliced asparagus Toss vegetables with light olive oil, salt, and a squeeze of lemon; roast in the oven at 500°F for 10 minutes |
320 calories 30 g protein 18 g carbohydrate 7 g fiber |
Snack | • 1 medium fresh peach (about 3 ounces) • ½ cup fat-free plain cottage cheese | 100 calories 15 g protein 15 g carbohydrate 2 g fiber |
Total Calories for the Day | 1,010 calories 87 g protein 86 g carbohydrate 21 g fiber |
REFERENCES
[1] Calories by Eva Osilla, Anthony Safadi and Sandeep Sharma
[2] University of Washington, Medical Center, UW Medicine, Food and Nutrition Services
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