Vitamin D in the UK: an urgent call to redefine the threshold for deficiency - Takeaways - MDSpire

Vitamin D in the UK: an urgent call to redefine the threshold for deficiency

  • By

  • Samantha Christie

  • Suma Uday

  • Thomas R. Hill

  • Jonathan M. Rhodes

  • Christopher T. Sempos

  • Carrie H. S. Ruxton

  • Martin Hewison

  • June 30, 2026

  • 0 min

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  • 1

    Vitamin D deficiency is a significant public health concern in the UK, particularly affecting high-risk groups such as children and ethnic minorities.

  • 2

    Current UK guidelines define vitamin D deficiency as serum 25-hydroxyvitamin D levels <25 nmol/L, which may underestimate the population's risk.

  • 3

    The ACT NOW Vitamin D collective advocates for raising the deficiency threshold to <50 nmol/L to align with international standards and improve public health.

  • 4

    The 2025 National Diet and Nutrition Survey indicates that a notable percentage of the UK population has serum 25(OH)D levels below the current deficiency threshold.

  • 5

    The persistence of vitamin D deficiency in the UK has prompted calls for policy review and improved strategies to address this ongoing health issue.

Original Source(s)

Vitamin D in the UK: an urgent call to redefine the threshold for deficiency

  • by Samantha Christie, Suma Uday, Thomas R. Hill, Jonathan M. Rhodes, Christopher T. Sempos, Carrie H. S. Ruxton, Martin Hewison

  • June 30, 2026

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