The Claim
Myostatin, a member of the TGFβ family, regulates muscle mass during both embryogenesis and postnatal development in striated muscle.
What the research says
Roughly balanced
Support and challenge are close. The picture may shift as more studies come in.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Myostatin is a protein that controls how much muscle tissue develops in animals during fetal growth and after birth, specifically in heart and skeletal muscles.
See the scientific wording
Myostatin, a member of the TGFβ family, regulates muscle mass not only during embryogenesis but throughout postnatal development in striated muscle.
Myostatin protein constantly blocks signals that tell muscle cells to grow bigger and make more nuclei. When myostatin is removed, muscle cells increase protein production and recruit more nuclei from nearby stem cells, causing muscles to get larger. This happens in babies and adults alike.
What the research says
1 studyStudy: Modulating skeletal muscle mass by postnatal, muscle‐specific inactivation of the myostatin gene
Scientists turned off the myostatin gene in adult mice and found their muscles grew much bigger—proving that myostatin doesn’t just control muscle growth in babies, but keeps limiting it even in adults.
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.