Something that came up from one of my clients who was feeling hungry in work and wanted to grab a go ahead bar for a snack as it was a low fat option. When I looked it up I realised what a sleazy deal that is being done by these so called diet bars, So before I dive in, I recommended she got some rice cakes and a small portion of Peanut butter to take away her craving or some yoghurt with a tiny portion of almonds mixed in.
So here was the deal, that bar was ONLY 3.4% fat. But when I worked out the numbers this was absolute rubbish. So this is how it panned out. Look at the information from these Go Ahead bars which claim to contain just 3.4g fat per bar, which is a play on peoples understanding of percentages of fat, most of us looking quickly would think that this product contained only 3.4%.
Let’s look at the figures for the percentage of fat the bars are per 100g and per bar. So they are calculating that 3.4 expressed as a percentage of 100g.
The correct way to calculate the % is as follows.
per 100g per bar
Energy 391kcals 117kcals
Protein 6.8g 2.0g
Carbohydrates 65.2g 19.6g
of which sugars 23.7g 7.1g
Fat 11.4g 3.4g
of which saturates 2.2g 0.7g
Don’t forget per gram of fat there are 9 kcals, carbohydrates and proteins have 4
kcals per gram
Based on Per bar: -
Multiply the grams of fat by 9 (9 kcal per gram) to get the amount in calories:
3.4 x 9 = 30.6 calories
Divide this by the number of calories per bar
30.6 divided by 117 = 0.261
Multiply this number by 100 to get the percentage = 26.1 %
The actual fat % of this product is over a quarter of its content
Yes that really is super low fat eh?
Check out your store cupboard and grab a calculator you will be amazed at the lies and advertising BS we are being fed.