The factor 9 is that there are about nine calories
to a gram of fat (as opposed to 4 calories to a
gram of carbohydrate). I don't know why she claims
that it is a lie (unless she knows more than that mentioned
above). SO out of 256 calories, (6.3X9) 56.7 caloris are
from fat which translates to about 22% fat.
Some people recommend that any food you consume
should preferably NOT contain more than 20-25% of its
calories from fat.
Hope this helps!
Savithri
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.............................................
KALI, THE AVENGER
.............................................
>Hello
>I was watching a bit of Susan Powter's infomercial, 'stop
>the insanity', which is about loosing weight and getting
>fit. She told her audience about her 'fat formula' which
>supposedly tells you the percentage of fat in a certain
>food. She remarked that the food industry is lying to us
>about the amount of fat in food. For example, if a frozen
>dinner has 6.3 grams of fat and a total of 256 calories, she
>calculates the percentage of fat with the following formula:
> ( 6.3 * 9 / 256 ) * 100 = 22%
>I do not know why she multiplies it by 9. Can anyone
>explain the validity of this?
>Thank you
>John Reynolds
>S270...@nickel.laurentian.ca
Fat has 9 cals/gram. So 6.3 grams fat X 9 cals/g = total fat calories.
Divide by the total calories of the serving (in this case 256) and multiply
by 100 gives you % fat calories. The "lie" she mentions is that
manufacturers often use % fat by weight i.e. if you have an 85g portion of
chips and get 30g of fat, then the chips are only 30/85 X 100 = 35% fat by
weight, although they are 30g X 9 cal/g / 450 cal total X 100 = 60% fat by
calories!
Lee Ann Wentzell "Her ego wrote out cheques incredibly fast
Biology Department But her personality didn't have the cash..."
Acadia University The Northern Pikes
Wolfville, NS, CAN
1 gram of FAT == 9 calories so if you take ((FATgrams * 9)/calories) *100
you get the % of FAT in the meal...hence her formula.
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I think it's because each gram of fat has 9 calories. This makes sense
because 6.3 * 9 gives the number of calories from fat so to get percent
fat you divide calories from fat by total calories then multiply by 100.
Doug Gilliam
>Thank you
>John Reynolds
>S270...@nickel.laurentian.ca
** Doug Gilliam (Fed. Systems) 803-739-6184
** NCR - MCPD Columbia FAX 739-7318
** 3325 Platt Springs Rd. VoicePlus 632
** West Columbia, SC 29170 doug.g...@ColumbiaSC.NCR.COM
>I was watching a bit of Susan Powter's infomercial, 'stop
>the insanity', which is about loosing weight and getting
>fit. She told her audience about her 'fat formula' which
>supposedly tells you the percentage of fat in a certain
>food. She remarked that the food industry is lying to us
>about the amount of fat in food. For example, if a frozen
>dinner has 6.3 grams of fat and a total of 256 calories, she
>calculates the percentage of fat with the following formula:
> ( 6.3 * 9 / 256 ) * 100 = 22%
>I do not know why she multiplies it by 9. Can anyone
>explain the validity of this?
I think the idea is that the "9" is the number of calories in 1 gram
of fat. Whether or not this is entirely accurate, I don't know. I kind
of thought fat was more like 14 calories per gram, but I'm not sure.
Eric
--
* Eric J. Hansen | Center for Clinical Computing *
* er...@enterprise.bih.harvard.edu | 350 Longwood Avenue, Boston, MA *