Industry-funded research: Vitamin D and Covid-19

I was interested to come across this paper: Conflict of Interests in the Scientific Production on Vitamin D and COVID-19: A Scoping Review.   Front Public Health. 2022 Jul 11;10:821740.   doi: 10.3389/fpubh.2022.821740. eCollection 2022.

Results and conclusions: 

• Studies were funded by companies in the diagnostics, pharmaceutical and food sectors.
• Conclusions favorable to vitamin D supplementation were more prevalent in papers where COI was identified (9/13, 69.2%) than among papers where COI was not found (4/16, 25.0%).
• Omissions of disclosure of COI, funding source, and sponsor functions were observed.
• The identification of possible corporate political activities in scientific papers about vitamin D published during the COVID-19 pandemic signals a need for greater transparency and guideline development on the prevention of COI in scientific production.

Comment:  Not many studies look at disclosure issues this closely.  This is a welcome addition to the genre.  It reminds me of this especially entertaining report: “COVID-19 and misinformation: how an infodemic fuelled the prominence of vitamin D.”  Papers on vitamin D and COVID-19, it seems, are not only influenced by corporate interests; they are also occasionally fraudulent, if viral.

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