The Claim
In rats, overexpression of the vitamin D receptor (VDR) is associated with increased satellite cell content, upregulation of the proliferation markers PAX7 and PCNA, and downregulation of myostatin, suggesting that VDR may enhance muscle growth potential by promoting satellite cell activation.
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 rats, having more of a protein called VDR seems to help muscle repair cells multiply and grow, while reducing a protein that stops muscle growth—so it might help rats build more muscle.
See the scientific wording
In rats, VDR overexpression is associated with increased satellite cell content and upregulation of proliferation markers (PAX7, PCNA) and downregulation of myostatin, suggesting VDR may enhance muscle growth potential by promoting satellite cell activation.
What the research says
1 studyStudy: Overexpression of the vitamin D receptor (VDR) induces skeletal muscle hypertrophy
Scientists made rats produce more of a protein called VDR in their muscles, and the muscles grew bigger because more stem cells became active and stopped producing a muscle-growth blocker—exactly what the claim said would happen.
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.