The Claim

The genetic variants employed to predict vitamin D levels in this study are stable across the lifespan and likely reflect long-term vitamin D exposure, which supports their validity as proxies for vitamin D status during critical growth periods, even when using adult-based genetic data.

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

What the research says

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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.

Description
1 study reviewed
In plain English

Scientists use your genes to guess how much vitamin D you’ve had over your life, and since these genes don’t change much as you grow, they can help estimate your vitamin D levels even when you were a kid—even though the data was collected from adults.

See the scientific wording

The genetic variants used to predict vitamin D levels in this study are stable across the lifespan and likely reflect long-term exposure, supporting their use as proxies for vitamin D status during critical growth periods despite the use of adult-based data.

What the research says

1 study

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

    The authors justify using adult vitamin D GWAS data by citing known stability of key genetic variants (GC, CYP2R1) in vitamin D metabolism, which is biologically plausible and necessary for MR validity.

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

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