Vitamin D helps muscle cells grow and use energy better
Effects of vitamin D on primary human skeletal muscle cell proliferation, differentiation, protein synthesis and bioenergetics.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Scientists gave muscle cells a form of vitamin D and saw that it slowed down their growth, helped them turn into mature muscle cells, made them better at building protein when insulin was around, and made them use more oxygen for energy.
Surprising Findings
Vitamin D didn’t just help muscle cells—it forced them to mature faster by suppressing proliferation, which is the opposite of what most assume.
Common belief: more cell growth = better muscle. This study shows growth must be paused for differentiation to occur—vitamin D acts as a switch, not a stimulant.
Practical Takeaways
If you're vitamin D deficient, correcting your levels may help your muscles respond better to insulin and use energy more efficiently.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Scientists gave muscle cells a form of vitamin D and saw that it slowed down their growth, helped them turn into mature muscle cells, made them better at building protein when insulin was around, and made them use more oxygen for energy.
Surprising Findings
Vitamin D didn’t just help muscle cells—it forced them to mature faster by suppressing proliferation, which is the opposite of what most assume.
Common belief: more cell growth = better muscle. This study shows growth must be paused for differentiation to occur—vitamin D acts as a switch, not a stimulant.
Practical Takeaways
If you're vitamin D deficient, correcting your levels may help your muscles respond better to insulin and use energy more efficiently.
Publication
Journal
The Journal of steroid biochemistry and molecular biology
Year
2019
Authors
Karina Romeu Montenegro, Rodrigo Maron Carlessi, Vinicius Fernandes Cruzat, P. Newsholme
Related Content
Claims (5)
If you have more vitamin D in your body, your body burns more calories while you're just sitting still—even if you don’t move more or eat differently.
A form of vitamin D that your body uses helps muscle cells grow better, improves how muscles use insulin to build protein, and makes the energy factories inside muscle cells work harder.
When you give a special form of vitamin D to muscle cells in a lab dish for a day or three, it slows down how fast they multiply and helps them turn into mature muscle cells by changing which genes they use.
When muscle cells from humans are treated with a specific form of vitamin D for five days, they become more active in building proteins — especially when insulin is also around.
When you give human muscle cells a specific form of vitamin D, they start using more oxygen — but only after 24 hours if they’re young cells, and after 5 days if they’ve turned into mature muscle fibers.