VITAMIN B12

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Recent studies have raised concerns about vitamin B12, highlighting both deficiencies and potential risks associated with excessive supplementation.

Vitamin B12 Deficiency in Individuals with Type 2 Diabetes

A comprehensive analysis published in BMJ Nutrition, Prevention & Health reviewed 132 studies involving 52,501 participants globally. The findings revealed that over half of individuals with type 2 diabetes are deficient in vitamin B12, vitamin D, and magnesium. While it's unclear whether these deficiencies are a cause or consequence of diabetes, the correlation underscores the importance of a balanced diet rich in these nutrients. citeturn0news14

Potential Risks of High-Dose Vitamin B12 Supplementation

Conversely, the VITamins and Lifestyle (VITAL) cohort study, which followed over 70,000 men, found that prolonged high-dose supplementation of vitamins B6 and B12 was associated with an increased risk of lung cancer. Men consuming more than 20 mg of vitamin B6 or over 55 µg of vitamin B12 daily for a decade had nearly double the risk of developing lung cancer compared to non-users. This finding suggests that excessive intake of these vitamins may have adverse effects. citeturn0news15

Rising Hospital Admissions Due to Vitamin Deficiencies

In England, there has been a troubling rise in hospital admissions related to vitamin deficiencies. Iron deficiency accounted for nearly 192,000 admissions in 2023/24, an 11% increase from the previous year. Admissions for vitamin B deficiencies, excluding folate, have also surged. Vitamin B12 deficiency can lead to anemia, neurological issues, and other health problems. This trend highlights the need for improved access to nutritious diets to prevent such deficiencies. citeturn0news16

Conclusion

These studies emphasize the delicate balance required in vitamin B12 intake. Both deficiency and excessive supplementation pose health risks. Individuals should consult healthcare professionals before starting any vitamin regimen to ensure appropriate dosing and to avoid potential adverse effects.

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