Two phenomenal reads by a brilliant professor (Brian Peska) - Highly worth your time if you get the chance...
http://www.brianpeskin.com/reports/LandmarksinNutrition.pdf
http://www.brianpeskin.com/reports/Ketosis.pdf
http://www.brianpeskin.com/reports/LandmarksinNutrition.pdf
http://www.brianpeskin.com/reports/Ketosis.pdf