The principle of eating processed foods that are high fat will make most people fat. But we are not comparing apples to apples, we are comparing grass-fed ribeye to twinkies. Also most Americans would see some benefit from getting more vegetable fiber in their diet. Once again we are looking at a SAD standard American diet of overly processed junk, where eating more fiber will probably help. But so would eating more unprocessed, humanly raised natural meats. He has some valid points, but PUFA's and transfats are not comparable to natural healthy animal fats.

I've given up on arguing with idiots. Life is too short.

I'd agree that process foods and that "gaming" the system with scientific derived fats (like trans fats and PUFA) are making us fat.

Naturally occurring fats, when consumed without excessive carbs, does not seem to have a correlation with weight gains in healthy adults.

Why try to argue past that? We are in agreement in principal as to the cause, we differ as to the solution and there is no evidence that supports either conclusively.

Forks over Knives is a vegan propaganda film not based on real science: http://rawfoodsos.com/2011/09/22/forks-over-knives-is-the-science-legit-a-review-and-critique/

High fiber, low fat diets make me sick, swollen, in pain and gaining a massive amount of weight. I know when my intestines are being shredded and what it feels like to have my stomach so swollen I can't sit up straight. (Literally.)

I've been looking at some recommended menus from McDougall and the like (the guy from the video being listed as staff there), and if I ate like that, I would be in a crazy amount of pain by the end of the week. I'm not even kidding. I would be so swollen, I'd waddle instead of walk.

He can say whatever he likes, but I've lived through it and I'm sure as hell not doing it again. So his arguments fall on deaf ears over here.

I have not watched the entire video yet, so take this for what it's worth. My experiences described here tell me there is more to being satiated than just having a full belly.

I was once fed intravenously for about a week while in the hospital. Even though my stomach was empty that whole time, I was never hungry and had no desire to eat. I was being satisfied by whatever was in the IV concoction.

A good broth, or just a little cream in my coffee, can also curb my hunger without adding bulk to my stomach.

I will feel full and satisfied (and later gassy) after eating lots of raw fibrous veggies, but my huger returns once everything settles and will want to eat more.

This is all anecdotal experiences, but I'm sure others can testify to the same.

Kinda how low-carbers flatly refuse to believe that low-carb diets offer no isocaloric fat loss advantage, despite over eight decades of metabolic ward trials showing exactly that. And kinda like how vegans militantly insist that their diets are in true peaceful harmony with nature despite the fact that these diets have repeatedly been shown to be sadly deficient in several critical nutrients and tend to render vegans a pack of emaciated, anaemic, sociopathic nutters who catch a cold when someone in another country sneezes and go ballistic and rabidly hurl unwashed manure-stained zucchinis (gotta get that B12 from somewhere, I guess) at their computer when someone dares criticize their illogical beliefs. Because when you belong to a religion or cult, it’s your job to be a conforming ** and abide by the dogma of that group no matter how much it flies in the face of scientific reality.