The percentage of fat in a food is NOT the same as the percentage of kilojoules/calories.
Food that appears to have a low fat percentage can
still have a high percent of the energy coming from fat.
eg whole milk is less than 4%fat yet....If you convert this to calories it turns out to be 51%fat from calories.
you can do this easily with any foods.
1 gram of fat = 9 calories
so the equation per serve is
grams of fat per serve x 9 divided by the total calories per serve. then times by 100 to get the %
eg whole milk. one cup 250ml
9.5g x 9 equals 85.5
divide by total cals 167
times by 100 equals 51% therefore
51% of the energy in this food comes from fat.
2% milk had 36%
1% milk has 20%
and no fat milk is 0%
| current weight: 184.0