The Claim
In older women performing resistance training, a protein intake of 1.4 g/kg/d increases blood urea nitrogen levels compared to a protein intake of 0.8 g/kg/d, with no evidence of adverse effects.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Older women who do resistance training and consume 1.4 grams of protein per kilogram of body weight per day have higher blood urea nitrogen levels than those who consume 0.8 grams per kilogram per day, without signs of harm.
See the scientific wording
In older women performing resistance training, higher protein intake (1.4 g/kg/d) increases blood urea nitrogen levels compared to the recommended intake (0.8 g/kg/d), indicating greater protein metabolism without evidence of adverse effects.
When more protein is eaten, the body breaks down the extra amino acids in the liver, removes their nitrogen groups, and turns them into urea, which shows up as higher levels in the blood. This process happens without damaging the muscles or tendons, even in older women who lift weights.
What the research says
1 studyWhen older women ate more protein, their bodies broke it down more — which usually means more urea in the blood — and this didn’t hurt their muscles or tendons. So yes, more protein means more processing, but it’s not harmful.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.