[riknos314]

The premise is correct, but this particular source is definitely an ad for a blood testing program.

> The [Vitamin D Receptor] VDR is part of the nuclear receptor superfamily of steroid hormone receptors, which are hormone-dependent regulators of gene expression. These receptors are expressed in cells across most organs. [1]

[1] https://en.wikipedia.org/wiki/Vitamin_D

[JumpCrisscross]

Sponsored content can still be well written. This one has that paragraphs-blurring-together-meaninglessly with some random-jargon effect sprinkled on that used to make me think commercial writing, but which I increasingly suspect to be slop.