The key to weight loss is to place your caloric intake in deficit. And there are only two ways to do this; burn more calories than you eat, or eat fewer calories than you’ll burn. Many dieters, especially dieters following a fad diet they don’t fully understand, often run face first into a lack of a calorie deficit when they wonder why the diet they’re struggling with isn’t shedding pounds.

A calorie deficit is as simple as it sounds; when the number of calories you’re eating doesn’t add up to what your body needs to function, that’s a deficit. When this occurs, the body goes looking for other sources of energy and nutrition. During healthy weight loss, the body will be burning fatty acids that are released into the blood as stored fat is processed for use.

The concept is simple, but actually calculating it can be difficult. There are a number of elements that go into accurate counting of what the body needs to function. Everyone’s metabolism is different, which affects the rate at which calories are burned. Environmental effects such as temperature can change how quickly or slowly calories are needed. Your current weight and physical activity play a role. It is possible to get a decent estimate of caloric burn rate, but it requires intensive examination of all the factors.

Key Points:

  • 1Despite all the fad diets and crazy exercise programs people suggest, losing weight comes down to expending more calories than you take in.
  • 2Precisely calculating your actual caloric expenditure is difficult because metabolisms, activities, even foods, are all different for different people.
  • 3The reason to calculate a reasonably precise caloric expenditure estimate is to avoid consuming so few calories that your body drops into starvation mode, which can inhibit timely weight loss.


Forget about strict diets and fasting. Use your brain when losing weight.

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HealthStatus has been operating since 1998 providing the best interactive health tools on the Internet, millions of visitors have used our health risk assessment, body fat and calories burned calculators.The HealthStatus editorial team has continued that commitment to excellence by providing our visitors with easy to understand high quality health content for many years.
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One thought on “What Is A Calorie Deficit and How To Calculate It?

  1. Fran

    Need loose 25 lbs how many calories and carbs should I have a day ?

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