Title : Calories - The Good, the Bad and the Ugly
link : Calories - The Good, the Bad and the Ugly
Calories - The Good, the Bad and the Ugly
If you eat to lose weight, will certainly have heard of calories. You may also decided that you need to eat a certain amount of calories per day to keep losing weight and even weigh and measure their food to make sure you are not overeating.
Although this is a useful way of making you more aware of what you eat, it is important to understand that not all calories are created equal and you have to think of something more than just calories if you want to lose weight and be healthy .
What is a calorie?
A calorie is a unit of heat energy - is the amount of energy required to raise the temperature of one gram of water by one degree Celsius. To estimate the number of calories food contains, scientists burn and measure the amount of heat given off. A calorie is equal to 4.2 kilojoules - the standard measure of energy in countries using the metric system
Different types of foods contain different amounts of calories :.
- Protein - four calories per gram
- carbohydrates - four calories per gram
- alcohol - seven calories per gram
- fat - nine calories per gram
it is estimated that one pound of body fat contains about 3,500 calories so that most diets suggest that creating a 500-calorie deficit day to lose a pound of fat per week (7 x 500 = 3,500).
There is more to food calories
thing is that, while the number of calories in a meal worth knowing, the body uses the calories of different foods in different ways. Calories from proteins are used differently shaped calorie fat for example.
For this reason, it is important to consider not only the amount of calories you eat, but where they come from and how your body will use ...
The Good - protein: is used for growth and repair of muscle and is very rarely used to produce energy. Your body has a very hard time converting fat protein, so it is a very "safe" diet food. Break down proteins also uses a lot of energy - about 30% of the number of calories from protein provides. This means that while the protein contains four calories per gram, only three calories can be used and are, in fact, is unlikely to be used for fuel anyway. More information about proteins in "Beginner's Guide protein powder" article.
Carbohydrates , on the other hand, are used for energy, but, if idle or eat more than you need, your body will quickly convert unused calories carbohydrates fat. much less energy is needed to break down carbohydrates - 5 to 10% on average - and thus more energy from carbohydrates is obtained compared to the protein. This helps explain why high protein / low carbohydrate diets value often lead to weight loss, even if you eat the same amount of calories
The bad - Alcohol :. contains seven calories per gram, but can only be used for energy. Alcohol fuel is a priority which means it must be burned before you can use the calories of food. If you drink alcohol with a meal, you are more likely to store food calories as fat, while the body burns alcohol. Alcohol can also increase appetite and makes it more difficult to make the choice of sensitive food because it can inhibit the process of decision making
El Feo - Fat : . is the most calorie food and it takes very little energy to digest. This means that fat is not only contains a lot of calories, all those calories are usable within your body. Food calories from fat are easily converted into fat in your body, together with its high calorific value, he explains why low-fat diets may be useful for weight loss
Not all fat it is ugly . - However, not all fats are equal and where your body does not like to use saturated fats energy, use unsaturated fats of important chemical reactions that means that despite all fats contain nine calories per gram, some fat only be used as fuel if you eat too much of them.
If calories are counted, it is important to understand that doing so only gives a rough idea of the amount of energy actually consumed. A meal rich in protein 500 calories affect your body very differently to a high-carbohydrate meal the same size. It is not enough to count calories; you also have to think about where those calories came from.
In addition, people who count calories often get very good in foods they replace. For example, if at the end of the day, has stopped eating 100 calories, you could eat an apple and some natural peanut butter or a couple of cookies. Although it contains about the same number of calories, these two foods behave very differently in your body with one (cookies) they are much more likely to cause weight gain.
Conclusion
Counting calories is only half the battle of weight loss - the source of those calories is equally important!
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