BMI, BMR ,Calorie

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Body Mass Index ( BMI )

Body mass index, or BMI, is a measure of body size. It combines a person's weight with their height. The results of a BMI measurement can give an idea about whether a person has the correct weight for their height.

Body mass index (BMI) formula



The following table shows standard weight status categories associated with BMI ranges for adults.







Basal Metabolic Rate (BMR)

The rate at which energy is used by an organism at complete rest, measured in humans by the heat given off per unit time, and expressed as the calories released per kilogram of body weight or per square meter of body surface per hour.

   The B.M.R. of an average Indian man is 1800-1900 Kcal/day.


How to calculate your calories






Calorie


The calorie is a unit of energy. The energy needed to raise the temperature of 1 gram of water through 1 °C (now usually defined as 4.1868 joules).

The calories needed to maintain your weight equal to the BMR value, multiplied by an activity factor. To lose 1 pound, or 0.5kg per week, you will need to cut 500 calories from your daily menu.

The best way to lose weight is through proper diet and exercise. Try not to lower your calorie intake by more than 1,000 calories per day, and try to lower your calorie intake gradually. Also, try to maintain your level of fiber intake and balance your other nutritional needs.


                                Energy of Common Food Components


Food Components
kJ per gram
Calorie (kcal) per gram
kJ per ounce
Calorie (kcal)
per ounce
Fat
37
8.8
1,049
249
Proteins
17
4.1
482
116
Carbohydrates
17
4.1
482
116
Fiber
8
1.9
227
54
Ethanol (drinking alcohol)
29
6.9
822
196
Organic acids
13
3.1
369
88
Polyols (sugar alcohols, sweeteners)
10
2.4
283
68






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