Low levels of Vitamin D linked to chronic rhinosinusitis; says study

With this background, researchers undertook the current study to evaluate the association of serum vitamin D levels with chronic rhinosinusitis (CRS) in population residing at high altitudes and to assess its correlation with severity of CRS.

As for the study design,A prospective case–control study comparing vitamin D in 60 cases (30 with nasal polyposis and 30 without) and 31 controls was carried out. Correlation of vitamin D with severity of disease (Lund Mackay CT/LMS and endoscopic Lund Kennedy scores/LKS) was assessed using Spearman's correlation (rs). Logistic regression analysis using vitamin D and confounding factors (Age and gender only, as other variables like smoking, bronchial asthma were exclusion criteria) as dependent and CRS (presence/absence) as independent variable, was also conducted.

Data analysis revealed the following facts.

• A significantly lower vitamin D levels were found in CRS (14.60 ± 7.68 ng/ml), CRSwNP (13.70 ± 7.88 ng/ml) and CRSsNP (15.49 ± 7.50 ng/ml), when compared to controls (29.36 ± 7.49 ng/ml).
• Non allergic cases when compared with controls, showed significantly lower vitamin D levels (13.91 ± 6.78 compared to 29.36 ± 7.49 ng/ml). LMS and LKS in CRS showed a moderate correlation with vitamin D (rs: − 0.604 for LMS, rs: − 0.595 for LKS).
• Logistic regression analysis showed vitamin D levels (Odds-Ratio 0.783) to be an independent predictive factor of CRS.For the full article follow the link: https://doi.org/10.1007/s00405-020-06368-y

Primary source: European Archives of Oto-Rhino-Laryngology