The Claim
Weaning in postpartum beef cows is associated with an increased capacity of transcortin to bind cortisol, without a change in transcortin's affinity for cortisol, indicating that alterations in cortisol transport may occur independently of binding affinity.
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.
In postpartum beef cows, weaning is linked to a higher ability of the protein transcortin to bind cortisol, but the strength of that binding does not change, suggesting cortisol transport can change without changes in binding strength.
See the scientific wording
Weaning in postpartum beef cows is associated with a tendency for increased transcortin’s capacity to bind cortisol, but does not alter transcortin’s affinity for cortisol, suggesting that changes in cortisol transport may occur independently of binding strength.
When cows stop nursing, their bodies produce more transcortin molecules that can each hold a cortisol molecule, but each molecule still holds cortisol just as tightly as before. This means more cortisol can be carried in the blood without changing how strongly it sticks to the carrier.
What the research says
1 studyAfter cows stop nursing their calves, the protein that carries cortisol in their blood starts holding a bit more cortisol, but it doesn’t grip it any tighter — which is exactly what the claim says.
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.