CALORIE Meaning and
Definition
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A calorie is a unit of measurement used to quantify the energy content of food and the amount of energy expended during physical activity. It is defined as the amount of energy required to raise the temperature of one gram of water by one degree Celsius.
In the context of nutrition, calorie refers to the energy obtained from consuming food and beverages. It is commonly used to represent the energy content present in macronutrients (such as carbohydrates, proteins, and fats) that are broken down during digestion. Each macronutrient has a specific caloric value: carbohydrates and proteins provide approximately four calories per gram, while fats provide around nine calories per gram.
Understanding calorie intake is essential for maintaining a healthy diet and body weight. Daily caloric intake is determined by an individual's age, sex, weight, height, and activity level. Balancing calorie intake with energy expenditure is crucial for weight management - consuming more calories than the body needs leads to weight gain, while a deficit promotes weight loss.
In the realm of exercise and physical activity, calories denote the amount of energy expended during specific activities. This can be influenced by factors such as intensity, duration, and an individual's body composition. Physical activity is a means of burning calories, which is vital for weight management and overall health.
In summary, a calorie is a unit of measurement used to quantify the energy content of food and the energy expended during physical activities. It plays a vital role in determining one's nutritional needs, weight management, and overall energy balance.
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A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
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Etymology of CALORIE
The word "calorie" originated from the Latin word "calor", which means "heat" or "warmth". The concept of the calorie was introduced by French chemist Nicolas Clément in 1824. He defined a calorie as a unit of heat measurement, denoting the amount of heat required to increase the temperature of one kilogram of water by one degree Celsius. Over time, the calorie became widely used to measure the energy value of food, representing the amount of energy required to raise the temperature of one gram of water by one degree Celsius.
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