
Supplements may carry higher deuterium than their natural-form equivalents, but let's do some math. Imagine you take dozen pills daily, maximally enriched. How does that compare to drinking eight glasses of tap water? - Two liters of tap water is ~2,000 grams - Water is ~11% hydrogen by weight = ~220 grams of hydrogen - Twelve large 1,000 mg pills is ~12 grams - ~8% hydrogen by weight* = ~1 gram of hydrogen Tap water delivers over 200 times more deuterium than the pills do. The supplement load is a rounding error against basic hydration. Also, I'm not a chemist, but looking at this through a logical lens. The claim that seed oils or synthetic vitamins carry deuterium concentrations higher than seawater (~156 ppm) doesn't make sense to me. Ocean water is Earth's natural ceiling for deuterium concentration, and my understanding is that going above it requires deliberate processes – like the centrifuges used to produce heavy water for nuclear reactors. It's hard to see how a supplement factory could accidentally run that process. The industrial inputs blamed for the enrichment — like hexane — are derived from fossil fuels (crude oil and natural gas), which come from ancient biological matter. These should reflect the deuterium contentration of the biological processes that formed them, which is most likely to be *depleting*. Even so, worst case is still just ~156 ppm, like seawater. Heavily-deuterated hexane does exist, but it used for nuclear magnetic resonance spectroscopy, and is *very* expensive – about $100k a gallon – vs $4-6 per gallon of industrial hexane. So while I may not advocate for taking lots of supplements, I don't think the deuterium is a problem to lose any sleep over (especially if you're already taking melatonin to help with your sleep!) sigmaaldrich.com/US/en/product/… * 8% by weight is rounding up by a fair margin of the hydrogen in the supplements mentioned in the quoted post.

































