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Calorie Deficit

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Calorie deficit
Calories explained:
Calorie is a unit of energy. In case of food and nutrition, this unit is employed to denote the
amount of energy furnished by a food or drink and also the amount of energy which is required
to carry out the functions of the body like walking, running or any other functions like the mental
processes. Calories are widely used to denote the energy values of foods and are labeled on the
packaging of food items as well (Nordqvist, 2017).
Scientifically, calories are divided into two types, the basic unit being he Calorie often called
small calorie and the derived unit being large calorie or kilocalorie which actually is a multiple
of the small calorie being equivalent to 1000 calories as its name implies. A calorie is defined as
the quantity of energy needed to increase the temperature of one gram of pure water by one
degree centigrade. Accordingly, one large or kilocalorie is the amount of energy required to raise
the temperature of one kilogram of pure water by one degree centigrade. From now onwards, the
discussion will focus on kilocalorie as the unit of energy as small calorie is too “small” to be of
any significance in human energy transactions and accordingly not used in labeling food values
or to denote human activities. Instead the Kilocalories are used (James, 2006).
Normal Calorie requirements
The daily requirement for calorie varies for different human beings according to their age, sex
and physiological statuses like pregnancy and lactation. The normal adult caloric requirements
per day typically average 2700 Kcal per day for men and 2200 Kcal per day for women

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(Nordqvist, 2018). These calories are used to maintain the body’s energy homeostasis and
maintain the body weight at a steady level, provided all other factors are held constant.
Calorie deficit:
A calorie deficit, as its name implies, occurs when less than the usual amount of calories required
for the maintenance of body weight are consumed. There are two modes through which a calorie
deficit can be established:
i) Decreased intake of calories from the diet, which includes starvation, fasting and
eating less than normal.
ii) Increased utilization of calories in activities which burn calories such as walking,
running, swimming and other forms of physical activities. It also includes
physiological activities like growth and pregnancy as well as traumatic conditions
necessitating increased expenditure of energy in order to ensure healing of wounds
and regenerative activities of the body.
Consequences of Calorie deficit
There are two consequences of calorie deficit. The short-term to medium-term consequences of
calorie deficit are reduction in body weight. This is the basic theme underlying weight reduction
strategies aimed at reducing the caloric intake as well as increasing the caloric expenditure to
create a caloric deficit as explained above which then leads to a reduction in body mass. On the
long-term side, caloric deficit, especially if severe, can lead to starvation which results ultimately
in death of those who are subjected to it (Healthy Weight, 2016).

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Calorie deficit Calories explained: Calorie is a unit of energy. In case of food and nutrition, this unit is employed to denote the amount of energy furnished by a food or drink and also the amount of energy which is required to carry out the functions of the body like walking, running or any other functions like the mental processes. Calories are widely used to denote the energy values of foods and are labeled on the packaging of food items as well (Nordqvist, 2017). Scientifically, calories are divided into two types, the basic unit being he Calorie often called small calorie and the derived unit being large calorie or kilocalorie which actually is a multiple of the small calorie being equivalent to 1000 calories as its name implies. A calorie is defined as the quantity of energy needed to increase the temperature of one gram of pure water by one degree centigrade. Accordingly, one l ...
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