How much protein do we need | Dr Stuart Phillips and Dr Christopher Gardner

RDA Critique

The discussion on the Recommended Dietary Allowance (RDA) for protein reveals significant critiques, particularly from Stuart Phillips. He argues that the current methodology for determining the RDA is flawed and outdated, suggesting that the actual protein needs for optimal health are higher than the RDA 1. Phillips emphasizes that while the RDA might suffice for some, it doesn't account for the needs of older adults or athletes, who often require more protein for muscle maintenance and overall health 2. He states, "If we called it the minimum dietary intake, I could actually sort of walk away from this and not really talk about it anymore" 3.

   

Optimal Intake

The quest for determining optimal protein intake is complex, as Christopher Gardner explains. He highlights the challenges in defining what is optimal, whether it's for muscle building, maintenance, or disease prevention 4. Phillips5. Gardner adds, "If everybody got that estimated average requirement, by definition, half the people would be deficient" 6.

   

Elderly Needs

Addressing protein needs in older adults, Phillips notes that many elderly individuals consume less than the recommended 1.2 grams per kilogram, especially those who are frail or sedentary 7. Gardner points out that factors like loneliness and dental issues also affect their dietary intake, suggesting a multifaceted approach to improving their nutrition 7. Phillips asserts, "Exercise or activity is king and diet is queen," emphasizing the importance of physical activity alongside adequate protein intake for muscle preservation 8.