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Spirulina is far from a good health choice. It got popular because it contains a molecule that's similar to B12, but it turns out that it's not B12. But it does

Spirulina is far from a good health choice. It got popular because it contains a molecule that's similar to B12, but it turns out that it's not B12. But it does bind to B12 intrinsic factor, which is a problem because intrinsic factor production, not B12 consumption, is frequently the limiting factor in how much of the nutrient you can get into your system. Or, to put it more succinctly - spirulina : B12 :: CO : O2. And while I'm laying it on, probiotics isn't really all that impressive, either. Right now the food industry's approach to probiotics is, at best, comparable to the kind of thinking that caused to large swaths of the USA to have problems with kudzu and asian carp.

johnfn 10y ago
To be honest, I take my data from examine.com, which does a survey of the literature and backs me up on this (sorry, on mobile so I'm not going to pull out the URL, but google finds it easily). It specifically says spirulina is one of the few "superfoods" that is in fact good for you. Unless you've done a similar review of the literature and have comparable credentials, I'm probably not going to trust you on this one, unfortunately. It's nothing against you in particular; it's just that literally everyone totes a different set of studies and I can't trust everyone to have done the work necessary to show if they're valid.
- bunderbunder 10y ago
  Not interested in getting into an Internet argument over credentialism, but I will say that I did some looking at examine.com's treatment on spirulina, and found it to be less than compelling. It still commits the same fundamental mistake made by any other popular sources that covers supplements: it doesn't really give study quality adequate attention. Instead, it just accepts all published findings as probably being valid. What with the replicability rate for medical research papers being somewhere around 20%, that's an approach that will lead you astray 4 times out of 5. As a concrete example, the support they give for the first item in the table of results, lipid peroxidation, is three papers with n=37, n=16 and n=9. All of them throw some flags that make me suspect p-hacking may have occurred, with the n=37 one being the most worrisome in that department.
  - aaxe 10y ago
    Examine.com absolutely gives study quality, impact factor, etc consideration. Perhaps your superficial look was the problem.

johnfn 10y ago

To be honest, I take my data from examine.com, which does a survey of the literature and backs me up on this (sorry, on mobile so I'm not going to pull out the URL, but google finds it easily). It specifically says spirulina is one of the few "superfoods" that is in fact good for you. Unless you've done a similar review of the literature and have comparable credentials, I'm probably not going to trust you on this one, unfortunately. It's nothing against you in particular; it's just that literally everyone totes a different set of studies and I can't trust everyone to have done the work necessary to show if they're valid.

bunderbunder 10y ago
Not interested in getting into an Internet argument over credentialism, but I will say that I did some looking at examine.com's treatment on spirulina, and found it to be less than compelling. It still commits the same fundamental mistake made by any other popular sources that covers supplements: it doesn't really give study quality adequate attention. Instead, it just accepts all published findings as probably being valid. What with the replicability rate for medical research papers being somewhere around 20%, that's an approach that will lead you astray 4 times out of 5. As a concrete example, the support they give for the first item in the table of results, lipid peroxidation, is three papers with n=37, n=16 and n=9. All of them throw some flags that make me suspect p-hacking may have occurred, with the n=37 one being the most worrisome in that department.
- aaxe 10y ago
  Examine.com absolutely gives study quality, impact factor, etc consideration. Perhaps your superficial look was the problem.