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causal
Analysis v1
Strong Support

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.

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Pro
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Against

Evidence from Studies

Supporting (3)

51

Community contributions welcome

46

Vitamin D Status and Resting Metabolic Rate May Modify through Expression of Vitamin D Receptor and Peroxisome Proliferator-Activated Receptor Gamma Coactivator-1 Alpha Gene in Overweight and Obese Adults

Cross-Sectional Study
Human
2018

This study found that people with higher vitamin D levels tended to burn more calories at rest, even when their body size was taken into account, and that a gene linked to vitamin D (VDR) might be why. It doesn't prove taking more vitamin D will boost metabolism, but it strongly suggests a connection.

44

Hypothesized pathways for the association of vitamin D status and insulin sensitivity with resting energy expenditure: a cross sectional mediation analysis in Australian adults of European ancestry

Cross-Sectional Study
Human
2022 Oct

This study found that people with higher vitamin D levels tended to burn more calories at rest, even when other factors like insulin levels were taken into account — suggesting vitamin D itself may boost your body’s resting energy use.

3

Effects of vitamin D on primary human skeletal muscle cell proliferation, differentiation, protein synthesis and bioenergetics.

Cross-Sectional Study
In Vitro
2019 Oct

This study found that vitamin D makes muscle cells burn more energy, even when they're just sitting there. That’s exactly what the claim says vitamin D does—boosts your body’s baseline energy use without changing exercise or eating.

Contradicting (0)

0

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No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Similar Assertions

Having more vitamin D in your body might help you build more muscle and store less fat, directing your body’s energy toward making lean tissue instead.

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47
84%

In people of European descent living in Australia, having more or less vitamin D doesn’t seem to change how many calories your body burns at rest — any small effect vitamin D might have is probably canceled out by how it affects your body’s insulin response.

44
0
79%

In people who are overweight or obese, having more vitamin D in their body seems to be linked to how many calories they burn at rest, and this link happens because of how their body uses the vitamin D receptor gene — but not because of the PGC-1α gene.

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0
79%

In Australians with European roots, having more vitamin D in your blood might help you burn more calories while at rest—but if your body is better at using insulin, that calorie-burning boost might not be as strong.

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0
79%

People who naturally have more vitamin D in their blood tend to grow taller as they develop, which might mean their bodies are more focused on building muscle and bone rather than storing fat.

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75%

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