The Claim

Each standard deviation increase in vitamin D levels is associated with a 0.046 standard deviation increase in adult height, indicating that vitamin D supplementation is unlikely to produce clinically meaningful height gains in individuals who are already vitamin D-replete.

Source: Causal relationship between vitamin D and adult height: A bidirectional Mendelian randomization study

What the research says

Not yet evaluated

We are still looking at what the research says.

Supports
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Challenges
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These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Quantitative
1 study reviewed
In plain English

If you already have enough vitamin D, taking more won’t make you significantly taller — the tiny boost you might see is too small to matter in real life.

See the scientific wording

The effect size of vitamin D on adult height is modest, with each standard deviation increase in vitamin D corresponding to only a 0.046 standard deviation increase in height, indicating that vitamin D supplementation is unlikely to produce clinically meaningful height gains in vitamin D-replete populations.

What the research says

1 study

  1. Study: Causal relationship between vitamin D and adult height: A bidirectional Mendelian randomization study

    This study used genetics to show that having more vitamin D in your body makes you just a tiny bit taller — so tiny that if you already have enough vitamin D, taking more won’t make you grow any taller.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.