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I'm eating a pack of biscuits and on the label the following information is given:

Nutritional information per 100g of product

Carbohydrates - 75g
Proteins - 6g
Fat - 15g
Cholesterol - 0mg
Energy - 468kcal
Calcium - 60mg
Iron - 8mg

I would like to know more about this information. What does the information in grams mean? Should I be only concerned about the calories? How can I get the calorie information?

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closed as off topic by VPeric, FredrikD, Baarn, YYY, Greg Nov 11 '12 at 21:49

Questions on Physical Fitness Stack Exchange are expected to relate to physical fitness within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here.If this question can be reworded to fit the rules in the help center, please edit the question.

    
Per the FAQ, nutrition questions are expected to pertain directly to a stated fitness goal. –  Greg Nov 11 '12 at 21:56
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1 Answer 1

up vote 2 down vote accepted

You have to keep in mind the following:

  • 1 gram of fat yields 9 calories
  • 1 gram of carbohydrate yields 4 calories
  • 1 gram of protein yields 4 calories

so for the food you are eating:

Carbohydrates - 75g  ==>75*4 = 300 cal
Proteins - 6g ==>6*4 = 24 cal
Fat - 15g ==>15*9 = 135 cal

==>Carb+protein+fat gives total calories = 300+24+135 = 459 cal 

as for the vitamin/minerals:

Cholesterol - 0mg
Calcium - 60mg
Iron - 8mg

Those are not related to calories.
In general, nutrition labels should have a percentage daily value on the right side, which for these vitamins tells you how much percent of the required daily value that you need, does your food contain.

The vitamin/mineral daily requirements depend on your age and gender and is about how much (grams,mg,mcg.etc..) of each is required per day. You can check Health CANADA's website, they have a lot of info.

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