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Severe vitamin D deficiency raises respiratory hospitalization risk by 33%, study finds.
A UK study of 36,258 people links severe vitamin D deficiency (below 15 nmol/L) to a 33% higher risk of hospitalization for respiratory infections like pneumonia and bronchitis, especially in middle-aged and older adults.
For every 10 nmol/L increase in vitamin D levels, hospitalization rates dropped by 4%.
The research, published in the American Journal of Clinical Nutrition, supports the NHS recommendation for daily vitamin D supplements during autumn and winter, particularly for at-risk groups including older adults and those from ethnic minority communities.
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La deficiencia severa de vitamina D aumenta el riesgo de hospitalización respiratoria en un 33%, según un estudio.