The one thing that interests me in this piece is the bit about cadmium and heavy metals and the references at the bottom don't seem to list a study pertinent to this.
I've used "search page" and I've skimmed through all the titles, but I have crap eyesight. So maybe I'm missing the reference.
But I would love to see good research relating caffeine or coffee consumption to somehow helping with heavy metal issues.
The initial phrasing about heavy metals sounded to me like it was referring to the brewing process (without being specific as to which one).
At first approximation, I'd be surprised if agitating heated water in the presence of particular matter that increased its acidity, then running it through a fine woven filter, didn't have some net effect.
As for the exact mechanism and efficacy, that's unfortunately buried under 10,000,000 search results for coffee enema products...
I would think the heavy metals bit might be about metals in the coffee itself, from the soil it's grown in. This is common for cacao[0]. What sucks is, iirc, only the EU has limits for cadmium in food imports (or may in the near future?). Beyond that, California requires stuff to have a Proposition 65 label if it's too high in cadmium (but California's limit is significantly higher than what the EU was going to be).
>I'd be surprised if agitating heated water in the presence of particular matter that increased its acidity, then running it through a fine woven filter, didn't have some net effect.
Yeah, I caught that. But I also chalked it up to "the most defensible thing to say." It's part of why I would like to see studies of some sort.
I've done a little googling myself and wasn't thrilled with the results either, which is why I returned to the article to look at its sources to see if I could find a better place to start -- a thread to pull, if you will, to begin to unravel this question. Good sources tend to lead to other good sources, if only by telling you what sorts of phrases to use in your next search.
Coffee is rich in phenols and catechols, molecules with a strong electron reduction potential. Metals are more easily absorbed in the cation (eg Fe+2) state. Food and drink is a primary source of heavy metals for most humans. Reducing agents in the diet would reduce e.g. cadmium and mercury from +2 to the less available metallic state, where it would be excreted.
I've used "search page" and I've skimmed through all the titles, but I have crap eyesight. So maybe I'm missing the reference.
But I would love to see good research relating caffeine or coffee consumption to somehow helping with heavy metal issues.