Rhonda Patrick· PhD
Many dietary supplements may be contaminated with heavy metals or microbes or may contain synthetic drugs or ingredients not listed on their labeling.
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We can't find evidence that holds up here. Proponents are reasoning from mechanism or analogy rather than direct human data, and the most credible skeptics raise objections we can't dismiss.
Many dietary supplements may be contaminated with heavy metals or microbes or may contain synthetic drugs or ingredients not listed on their labeling.
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Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
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And just for people listening I mean this is not specific to NAD precursors. This is a systemic problem in neutrauticals in the supplement industry. There have now been many many published studies showing that quite a large large range of a variety of supplements that you can pull off the shelf at any store that most people shop at or off the shelf of Amazon warehouse shelf. Um oftent times don't contain much of the active ingredient and even more concerning often contain contaminants that could be harmful to ingest as well particularly if you're ingesting large doses.