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  2. A calorie is a calorie - Wikipedia

    en.wikipedia.org/wiki/A_calorie_is_a_calorie

    A kilocalorie is the equivalent of 1000 calories or one dietary Calorie, which contains 4184 joules of energy.The notion that "a calorie is a calorie" is related to the idea that weight maintenance is a result of equalizing calorie input and calorie output, [4] and may lead to the practice of calorie restriction.

  3. Specific energy - Wikipedia

    en.wikipedia.org/wiki/Specific_energy

    The energy density of a food can be determined from the label by dividing the energy per serving (usually in kilojoules or food calories) by the serving size (usually in grams, milliliters or fluid ounces). An energy unit commonly used in nutritional contexts within non-metric countries (e.g. the United States) is the "dietary calorie," "food ...

  4. Calorie - Wikipedia

    en.wikipedia.org/wiki/Calorie

    The calorie is a unit of energy that originated from the caloric theory of heat. [1] [2] The large calorie, food calorie, dietary calorie, kilocalorie, or kilogram calorie is defined as the amount of heat needed to raise the temperature of one liter of water by one degree Celsius (or one kelvin).

  5. How many calories are in a pound? Strategies for losing 1 ...

    www.aol.com/news/many-calories-pound-strategies...

    It has been believed that there are 3,500 calories in a pound, so therefore it would seem that if you reduce your diet by 500 calories a day or exercise and burn off 500 calories a day (or any ...

  6. How the calorie content in food is determined - AOL

    www.aol.com/lifestyle/2019-06-26-how-the-calorie...

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  7. Atwater system - Wikipedia

    en.wikipedia.org/wiki/Atwater_system

    The Atwater system, [1] named after Wilbur Olin Atwater, or derivatives of this system are used for the calculation of the available energy of foods.The system was developed largely from the experimental studies of Atwater and his colleagues in the later part of the 19th century and the early years of the 20th at Wesleyan University in Middletown, Connecticut.

  8. What Is a Calorie Deficit & How Does It Really Impact Weight ...

    www.aol.com/calorie-deficit-does-really-impact...

    In general, a gradual calorie deficit of 500 to 750 calories a day is considered safe and sustainable for most people, leading to a weight loss of about one to two pounds a week. Kateryna ...

  9. Food energy - Wikipedia

    en.wikipedia.org/wiki/Food_energy

    For example, the United States government estimates 8,400 and 10,900 kJ (2,000 and 2,600 kcal) needed for women and men, respectively, between ages 26 and 45, whose total physical activity is equivalent to walking around 2.5 to 5 km (1 + 1 ⁄ 2 to 3 mi) per day in addition to the activities of sedentary living.