If you like nutritionfacts.org, you may be interested to know Greger wrote a book which is well referenced:

http://www.amazon.com/How-Not-Die-Discover-Scientifically/dp...

Also, there was a recent article on Vox talking about why nutrition research is so hard to do:

http://www.vox.com/2016/1/14/10760622/nutrition-science-comp...