Research
Macro partitioning
The nitrogen balance method used to establish the 0.8 g/kg RDA likely underestimates true protein requirements due to methodological limitations, such as ignoring nonlinearity and metabolic adaptation.
Understand that the old '0.8g/kg' rule was based on a flawed measurement method. It is safer to aim higher, especially if you are active or older.
GoodRefutesHIGH confidence
The use of single linear regression analysis to interpret the nitrogen balance data... ignores that nitrogen retention by the body cannot continually increase as nitrogen intake increases.
Why this rating
Based on meta-analyses and re-evaluations of historical data cited in the review.
Source
Is It Time to Reconsider the U.S. Recommendations for Dietary Protein and Amino Acid Intake?
Mary Weiler et al. · Nutrients · 2023
DOI 10.3390/nu15040838
narrative_reviewCited 48×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
Related findings · Macro partitioning
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