How To Find The Caloric Value Of Food

How far is your office from home?
12 kilometers?

Just as kilometers is the unit of distance similarly Calories (Cal or kcal) is a unit of energy.

When we refer to calorific value of food, we are referring to the number of calories of energy provided by that food. With increasing need to lose and maintain trunk weight, people are getting conscious about their calorie intake.

But, is it really that simple? Do two different foods having similar calorific value give you lot exactly same energy?

Let me cite an example to explain the above bespeak:

Consider that your office is located in a less populated outskirts of the city and therefore the road to office is less crowded; whereas the movie theatre is located in busy metropolis heart.

Would you accept the same time and resource to reach both these places? If y'all take a cab ride, will the charges exist same since the altitude is same for both the destinations?

The answer is obviously NO. The same concept applies even for food calories. Ii different food items with same calorific value may be charged differently by your body to process it, depending on its composition.

To sympathize this better let'due south expect at food calories in item.

How much is ane Kcal or 1000 calories?

The Calorie you see on a food package is actually a kilocalorie, or 1,000 calories. A Calorie (kcal) is the amount of free energy needed to heighten the temperature of one kilogram of water by 1 caste Celsius.

How do nosotros determine calorific value of food?

The original method used to make up one's mind the number of kcals in a given food directly measured the energy it produced. The food was placed in a sealed container-an appliance known every bit a bomb calorimeter surrounded by h2o. The food was completely burned and the resulting rise in water temperature was measured. This method is not frequently used today.Food Composition tables and apps usually summate calorific value by nutrient composition of meal/nutrient article. 1 m protein /sugar gives approx. 4 kcal and one 1000 fat contributes 9 kcal.

So, is the 400 kcal coming from 100 thou carbs same as that coming from 100 g proteins?

No, the net effect of 400 kcal will vary depending on the source. Why and how- This info is of import for you lot if you are trying to manage weight!

To process and employ the nutrients, your body charges different nutrients differently (same as your cab charges differently on unlike routes for the same distance).

Corporeality of energy expenditure above the resting metabolic rate due to the cost of processing food for use and storage is chosen 'Thermic Issue of Food' (or Nutrition induced Thermogenesis).

Its magnitude depends on the limerick of the nutrient consumed:

Carbohydrates: 5 to 15% of the free energy consumed
Poly peptide: xx to 35%
Fats: at near 5 to 15 %

Without a doubt, protein is the macronutrient that induces the largest thermic effect of food response.

Does this mean effective calories coming from proteins are lowest?

Yes. Roughly 25% of the calories in pure protein will be burned after consumption due to the thermic consequence of food. Fat and carbohydrates, on the other paw, each induce a burn of roughly 5% of the calories consumed due to the thermic effect of food. And so, for case, if yous consume 400 calories of pure protein you will burn 100 (or 25%) of those calories through the thermic issue of food. If you consume 400 calories of pure fatty or pure carbohydrates, only twenty calories (or 5%) will be burned through the thermic effect of food.

Do Negative Calorie Foods exist, foods that take more free energy to digest than they provide in calories?

Information technology is theoretically possible to accept a negative-calorie food just, there are no scientific studies to show that sure foods have this event. Low calorie foods that are high in dietary fiber like green leafy vegetables are oft cited as negative calorie. This is not true, it's a myth.

What are Empty Calorie foods?

Empty calories apply to nutrient such as solid fats or added sugars supplying food energy but little or no other nutrition.

High intake of empty calorie foods leads to Subconscious Hunger. This can exist 1 of the reason for weight proceeds.

For a sustainable and healthy weight loss, focus on nutrient content and not calorie content of nutrient as all calories are non equal.