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Experts Warn: Vitamin D Overuse Can Lead to Toxicity

1/23/2026

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Summary

Story summary

In the UK, many people turn to vitamin D supplements in winter due to limited sunlight.
Health experts warn that incorrect usage can cause headaches, stomach pain, and increased calcium levels.
Dr. Kathryn Basford emphasizes following prescribed dosages because excessive intake can lead to toxicity.
Sun exposure and diet influence vitamin D needs.

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Story summary

In the UK, many people turn to vitamin D supplements in winter due to limited sunlight.
Health experts warn that incorrect usage can cause headaches, stomach pain, and increased calcium levels.
Dr. Kathryn Basford emphasizes following prescribed dosages because excessive intake can lead to toxicity.
Sun exposure and diet influence vitamin D needs.