The gods have spoken! We are in the right:
some select quotes:
“Regardless of whether 0.8 g/kg/d is an appropriate value for the RDA for elderly persons as well as for 18- to 50-year-old individuals, the point is that the RDA is functionally defined as the amount of protein needed to avoid a deficiency that would lead to a progressive loss of lean body mass (as reflected by negative nitrogen balance).”
" However, although the term allowance implies an upper limit of intake, the DRI separately addressed the safe upper level of protein intake. It was concluded that there was no evidence documenting an upper level of protein intake beyond which adverse effects would ensue. Consequently, the DRI indicated that there is no tolerable upper intake level for protein.1"
“The estimated energy requirement for a 70-kg man and a 57-kg woman older than 18 years is 3067 and 2403 kcal/d, respectively.1 However, when summed together, the RDAs for carbohydrate, fat, and protein for individuals of the same weight would provide approximately 970 kcal/d for the man and 886 kcal/d for the woman. The RDAs for macronutrients thus total approximately one-third of the calories to meet the requirement for energy balance.”
The Recommended Dietary Allowance of Protein
A Misunderstood Concept
Robert R. Wolfe, PhD; Sharon L. Miller, PhD