Radioactivity comes from radioactive nuclei, so radioactive molecules must contain radioactive nuclei. Vitamin D is a group of closely related molecules composed of carbon, hydrogen, and oxygen. Therefore vitamin D molecules are no more inherently radioactive than and other molecules that contain these nuclei- which is to say, the overwhelming majority of organic molecules. There are naturally occurring radioactive isotopes of carbon and hydrogen but their incidence is pretty low, and wouldn't necessarily be expected to be more abundant in vitamin D than other naturally synthesized organic molecules... unless the local environment where the molecules are synthesized are enriched in these isotopes. But that is true of any organic molecule.
So the quick practical answer is no, I would not expect vitamin D to be more inherently radioactive than other organic substances, naturally occurring or otherwise, that you come in contact with on a daily basis. The technically correct answer is, yes, vitamin D would have some very low baseline radioactivity, but no more so than anything else. And certainly not enough to lead to physiological effects above the baseline. Anyone who says otherwise, particularly using scientifically dubious statements like "boost dna regeneration/activation", is selling you snake oil. And if they are selling you vitamin D that is actually artificially enriched with radioactive nuclei... you should probably call the FDA, FBI, and whatever other government agencies you happen to have on speed dial.
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Topic: Is vitamin D radioactive? (Read 2170 times)