In article , Mxsmanic wrote:
(in part)

Fat people tend to dramatically underestimate exactly how much they
actually eat, and exactly how many calories there are in what they eat.
It's hard to say how much of this error is deliberate and how much is
inadvertent, but the error is often very large.

I totally agree. Among the calorie-estimators that are fat and staying
fat, there is often fudging/dishonesty in the estimates.
But another thing: Some dishonesty in calorie count on package labels.
I remember when I saw in one of my local newspapers that this figure is
allowed to be off by up to 20% totally legally, and that it is usually
lower than "truth" for a lot of diet foods.

One little note: I just looked at the label on a 1-3/4 ounce pack of
sunflower seeds. The label said 300 calories. I added up using 9
calories per fat gram, 4 calories per protein gram and 4 calories per
carbohydrate gram and got 305 calories. Also note that I have heard more
than just a couple times that protein and carb were 4.5 calories per gram.
And I do not even know how far off they are allowed to be in grams of
protein, fat and carbs or total weight/volume per package.
(The grams shown on this package were 25 fat, 14 carb, 6 protein. This
leaves 4-5 grams water, "ash" [probably heavily salt but also inorganic
potassium compounds, inorganic calcium compounds, etc.] and cellulose.)

- Don Klipstein )