In trained men given 14g BCAAs daily for 8 weeks alongside a routine weightlifting plan, consumption of BCAAs promoted fat loss (% body fat) and promoted lean mass accrual () to a greater extent than 28g of whey protein ( lean mass and % body fat) and 28g carbohydrate ( lean mass and % body fat).  Although this study is promising, it has a few complications (diet was not recorded nor controlled, BCAAs were confounded with the inclusion of glutamine (5g) and citrulline malate (2g), funded by a supplement company called Scivation). 
I talked to your friend, Dr. Zubin Damania, for a good bit a few weeks ago while I was at Scripps for a conference. We both went on about how great your blog is! He talked me into getting a Precision ketone meter and pushing hard to stay in ketosis (still waiting for the strips to come in from Canada). I still have about 30-40 lbs of extra fat on me. I noticed that I eat too many low-carb veggies sometimes, which ends up stalling my fat loss. I think this post is very helpful and look forward to the time when I can add more back into my diet to maintain my weight.
“Reg Park’s theory was that first you have to build the mass and then chisel it down to get the quality; you work on your body the way a sculptor would work on a piece of clay or wood or steel. You rough it out””the more carefully, the more thoroughly, the better”” then you start to cut and define. You work it down gradually until it’s ready to be rubbed and polished. And that’s when you really know about the foundation. Then all the faults of poor early training stand out as hopeless, almost irreparable flaws. [..]