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Ian Brighthope's Substack

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Ian Brighthope's Substack
Ian Brighthope's Substack
Vitamin D and Cancer.

Vitamin D and Cancer.

Dosing, blood plasma testing, cofactors and future directions.

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Ian Brighthope
Apr 09, 2025
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Ian Brighthope's Substack
Ian Brighthope's Substack
Vitamin D and Cancer.
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Vitamin D and Cancer.

Dosing, blood plasma testing, cofactors and future research directions.

Key Points

  • Research suggests vitamin D may reduce cancer risk and improve outcomes, but evidence is mixed and depends on dosing and individual factors.

  • Studies often use low doses (e.g., 2000 IU/day), which may not achieve optimal plasma levels for cancer benefits.

  • …

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