Why don't nutritional labels add up?

[Curls4dGirls]

How come when you multiply the fat, carbs, and protein by their respective caloric values, the product never adds up to the calories on the label?

Take, for example, Optimum Nutrition Casein Protein:

Fat .5 g
Carbs 3 g
Protein 23 g

.5*9 + 3*4 + 23*4 = 108.5 cals

But the label says 110 cals. With some foods, the difference can be significant.

Anybody know why this is?

[Shibby]

I have found that they don't say enough calories in alot of the junk food. But I just figured that they found some loop hole and feed of the ignorance of the consumer.

[Curls4dGirls]

Originally posted by Shibby
I have found that they don't say enough calories in alot of the junk food. But I just figured that they found some loop hole and feed of the ignorance of the consumer.

I create my diets in a spreadsheet and noticed that things didn't add up. So I created a column that calculates the difference between label cals and calculated cals. I even found differences in foods such as carrots, olive oil, broccoli, and turkey ... all good foods.

The differences are probably not enough to worry about, but I'm still curious as to the reason.

[The_Jarhead]

Some things like alcohol sugars for example are not classified by FDA as carbs, but they do have calories. This is also the case with other things (can’t think of them off the top of my head) in bars and shakes. This is one of the ways companies get away with saying things are low carb.

Try looking at the label on a beer. 3-4 carbs 0 protein 0 fats and over 100 calories.