Posted June 17, 2021
A recent study used genetic methods to estimate the levels of vitamin D (blood levels of 25OHD) in individuals. The method is called “Mendelian Randomization” that estimates the metabolic activity in individuals using certain genetic mutations (SNPs) relevant to genes that are associated with 25OHD metabolism. By analyzing the genetic makeup of those who had COVID-19, the study concluded that vitamin D is not effective at reducing risk of COVID-19 infection. [1] However, the study had several limitations. It did not actually test blood levels of 25OHD — it only studied the genes involved in vitamin D metabolism. Read more.