Story perspectives

Vitamin D2 Supplements May Lower Vital D3 Levels

9/19/2025

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Summary

Story summary

Research shows that vitamin D2 supplements may reduce vitamin D3 levels, essential for bone health.
About one in six UK adults are vitamin D deficient, particularly in winter.
Vitamin D3, derived from sunlight and animal products, is absorbed more effectively than plant-based D2.
A meta-analysis found lower vitamin D3 levels in participants taking D2 compared to non-supplementers.
Experts recommend vitamin D3 for better immune support, with vegan options now available.

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Story summary

Research shows that vitamin D2 supplements may reduce vitamin D3 levels, essential for bone health.
About one in six UK adults are vitamin D deficient, particularly in winter.
Vitamin D3, derived from sunlight and animal products, is absorbed more effectively than plant-based D2.
A meta-analysis found lower vitamin D3 levels in participants taking D2 compared to non-supplementers.
Experts recommend vitamin D3 for better immune support, with vegan options now available.