It's quite apparent you didn't actually look through the website, or you are just a low-carb shill (if so, please see http://www.atkinsexposed.org - the same dietary nonsense seems to be repackaged by each generation). The NutritionFacts website is literally about published peer-reviewed research, not the author's own personal opinion, nor some "agenda" (pushed by whom, Big Broccoli?)
In case you aren't trolling, try disabling your ad-blocker. Each page has citations with direct links to the studies mentioned in each video.
If you can figure out the actual studies from those sites, please provide links to them or their abstracts, at least.
Otherwise, all that is being provided are two websites pushing books, and their failure to even give usable locators to the claimed studies in text footnotes on the pages (if not clickable links) is suspicious.
Like I've already said, the studies in each video on NF are linked directly. I don't see how they're "pushing books" on anyone - having read both of them, I can tell you the information they offer isn't much different than the free site content anyway.
In case you aren't trolling, try disabling your ad-blocker. Each page has citations with direct links to the studies mentioned in each video.