How does vitamin D deficiency affect hospitalization rates for respiratory infections?

Severe vitamin D deficiency is associated with a 33% higher hospitalization rate for respiratory tract infections compared to adequate levels.

What percentage of Americans have inadequate vitamin D levels?

Approximately 18% of Americans have inadequate vitamin D levels, according to study findings.

Should I take a vitamin D supplement for immune health?

It is recommended to consult a healthcare provider for a blood test to measure your vitamin D levels before starting supplementation.

Home / Health / Vitamin D May Cut Severe Flu Risk

Vitamin D May Cut Severe Flu Risk

24 Jan

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Summary

Severe vitamin D deficiency linked to 33% higher hospitalization rate.
Each 10 nmol/L increase in vitamin D dropped hospitalization by 4%.
18% of Americans have inadequate vitamin D levels, study finds.

Research published in The American Journal of Clinical Nutrition indicates that vitamin D could play a role in reducing severe outcomes from respiratory infections. Analysis of UK Biobank data revealed that individuals with severe vitamin D deficiency (under 15 nmol/L) faced a 33% greater likelihood of hospitalization for respiratory tract infections compared to those with levels of 75 nmol/L or higher.

For every 10 nmol/L increase in vitamin D concentration, the hospitalization rate for such infections decreased by 4%. This finding is particularly relevant as an estimated 18% of Americans have inadequate vitamin D levels. Experts note that vitamin D supports both innate and adaptive immune functions.

While the study was observational, focusing on severe deficiencies, it highlights the importance of adequate vitamin D levels for immune health. However, doctors emphasize that vitamin D supplementation should be approached cautiously. Excessive intake can lead to harmful calcium buildup in the blood. Consulting a healthcare provider for a blood test to determine individual needs before starting any supplement regimen is recommended.