A calorie is an unit of measurement for energy.

The calorie was never a metric or SI unit.

In most fields, it has been replaced by the joule, the SI unit of energy. It remains, however, in common use for the amount of energy obtained from food.

Recommended daily energy intake values for young adults are: 2500 kcal/d for men and 2000 kcal/d for women. Nutritional calories are not measured amounts of energy, but are calculated from food composition.

Such calculations use internationally agreed conventional conversion factors, which are generously rounded values that roughly approximate the average energy density of a large number of different food samples..

For more information about the topic Calorie, read the full article at Wikipedia.org, or see the following related articles:

Basal metabolic rate — Basal metabolic rate (BMR), is the rate of metabolism that occurs when an individual is at rest in a warm environment and is in the post absorptive ...  > read more

South Beach diet — The South Beach diet, developed by Miami, Florida-area cardiologist Arthur Agatston, emphasizes the consumption of "good carbs" and "good fats." Dr. ...  > read more

Zone diet — The Zone diet is a diet popularized in books by Barry Sears. It advocates balancing protein and carbohydrate ratios instead of caloric thinking as an ...  > read more

High fructose corn syrup — High fructose corn syrup (HFCS) is a newer and sweeter form of corn syrup. Like ordinary corn syrup, it is made from corn starch using enzymes. High ...  > read more

Related Stories

Search ScienceDaily

Turning Trash Into Power