Arlene, you might enjoy this interview transcript with Dr. Phinney from April 2011. Before the A&SLCL book was published, but he talks about protein levels:
http://www.meandmydiabetes.com/2011...than-high-carb/

I read the book from the library and can't refer to it now, but did he define "reference weight"? Have seen the mid-point of healthy BMI used before, which for me is 145 (in my dreams..college weight) and you around 120.