Blog
Long reads, slowly written.
No SEO sludge. Each piece is published only when it has something to add to the conversation our community has been having for almost two decades.
- Science·4 May 2026·7 min read
Spirulina and iron: who actually benefits
The clearest, best-supported clinical use of spirulina is for iron-deficient adults — and it's the most overlooked. Here's the case, the dose, and the caveats.
Read article - Editorial·4 May 2026·5 min read
The case against “blue spirulina” powder
It's bright, it's photogenic, and it costs ten times more per gram than the real thing. Here's why we don't recommend isolated phycocyanin as a substitute for whole spirulina.
Read article - Buying·4 May 2026·6 min read
How to read a Certificate of Analysis in five minutes
Every reputable spirulina producer publishes a CoA. Most people don't know what they're looking at. Here's the short version, with the fields that actually matter.
Read article - Editorial·4 May 2026·4 min read
Why we started Spirulina Guru
After nineteen years of moderating the largest organic spirulina community on Facebook, the same questions kept coming back. This is the site we wished existed.
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