Comment: You don't know

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In reply to comment: Carbs and fat contain protein? (see in situ)

You don't know

What you are talking about.

Fat doesn't make people fat. Study after study has concluded this.

Fries used to be cooked in a very healthy saturated fat: beef tallow. Then some researchers came up with the idea that saturated fat raises your cholesterol and thus causes heart attacks. It's a theory which clinical science has NEVER, to this day, proven with data to back it up. So why is it that today we all "know" that saturated fat is bad for us? Maybe it isn't?

In any case, the anti-saturated fat lobby made fast food restaurants switch to a "healthy" unsaturated oil made from vegetables. Isn't that great? Oh wait, it wasn't, because that replacement oil turned out to be hydrogenated (AKA trans-fats) which clinical studies quickly showed to cause inflammation and subsequent heart attacks.

When they discovered this, the anti-saturated fat lobby was quick to pretend they had been against trans-fats all along and pressured the fast food chains to switch to a "healthy" poly-unsaturated oil such a corn, canola or soybean oil. Whew, problem solved. Or is it? The body requires two kinds of poly-unsaturated oils for optimum health: Omega-3 (which you hear so much about) and Omega-6. The ratio of O-3/O-6 in most fats is pretty even. Omega 3 is higher in meats, especially fish, while Omega 6 is higher in plants. A very nice reason why humans are omnivores and require both!

A problem arises when almost all fat a person ingests is from plant sources. In the average diet 50 years ago, the Omega 6/Omega 3 ratio may have been around 3:1. Today, however, that ratio is more like 25:1. All mechanically extracted vegetable oils have an unnaturally high Omega 6 count compared with Omega 3. Subsequent studies have shown high levels of Omega 6 without the balancing effect of Omega 3 cause inflammation and possibly heart disease. Funny, I think we've heard this story before...

So when you say that fries are unhealthy because of the oil, not because of the sugar, you are half right. The oil used by the vast majority of fast food chains to fry their potatoes is practically unfit for human consumption. Better they should go back to using healthy animal fats such as beef tallow or even lard, both of which have never been clinically linked to heart disease. The same can't be said for the ubiquitous processed vegetable oils we are using today.

As for the sugar content of potatoes being unhealthy? Sugar is what's making us fat, not fat. Calorie-dense vs non-calorie-dense is complete nonsense. In fact, studies have shown the opposite: people who eat a supposedly non-calorie-dense starchy snack before a meal are more likely to eat MORE than people who eat a calorie-dense fatty snack.

Educate yourself.