Protein & Nutrition Blog – Marmels

The protein-kidney warning has shadowed nutrition advice for decades, but the modern evidence base tells a clearer story. For adults with healthy kidneys, a meta-analysis of 28 controlled trials found no change in kidney function across the safe upper range, up to 2.0 grams per kilogram of body weight per day. The caveat is real but specific: it applies to people with diagnosed chronic kidney disease, not to the general healthy-adult population.