A few people that are worth reading: Nina Tiecholz
http://thebigfatsurprise.com for a fascinating history of how crisco and white bread came to be "healthy" food and how grass fed beef got to be "bad" food.
Of course Gary Taubes, also Eric Westerman/Steve Phinney/ Jeff Volek. You don't have to be convinced by reading a book, maybe it just makes you curious.
The best question is "What works for me" and if you try some variation of low/er carb high/er fat for 30 days and don't like it you have lost nothing. (except maybe 5- 8 lbs and lower triglycerides)...)
Like others I followed a pasta/gatorade/powergel/pbj/chicken breast/ egg whites low fat "endurance athlete diet" for 20+ years and gained a pound a year despite being very active.
I'm now 20# lighter, 2 pants sizes smaller, really never hungry and all of my blood work and lipids are much improved. Even "gained" 7 years on my carotid artery scan "age".
FWIW Marion Nestle's WSJ is silly, she's long been in the "eat lots of whole grains and veggies" camp and offers silly platitudes like "we don't know what paleo people ate" but ignores the logical idea that they did not eat twinkies or pop tarts.
don't just do something..... sit there