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REBUTTAL: Toxic Puzzle Documentary - Disgraceful Misrepresentation of Spirulina

4,266 views · Published 11 November 2017 · 24:29 · Indexed 27 October 2026

Channel: Dr. Bob McCauley · 2017 · Howto & Style

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I watched the (boring) documentary "Toxic Puzzle" recently which attempts to show the link between Amyotrophic lateral sclerosis (ALS) and β-Methylamino-L-alanine (BMAA), an amino acid found in cyanobacteria such as Aphanizomenon flos-aquae (AFA) which is found in Klamath Lake, Oregon and other places around the world.  At the end of "Toxic Puzzle" they point the finger at Spirulina platensis as being potentially toxic and then they actaully lie about their findings.   They don't bother to mention AFA in their documentary, which is known to have Microcystins, Saxitoxins, Cylindrospermopsin and Anatoxins. 

BMAA is a dangerous amino acid, which is why we test for it.  Here are our test results.  Parry_BMAA_Cyanotoxins_report

I refute all these spurious claims against spirulina in my Rebuttal, which posted on Youtube.

Harmful Algae Blooms (HAB) often involve cyanobacteria such as AFA.  The most common species of toxic cyanobacteria in the Great Lakes are: Microcystis aeruginosa, Anabaena circinalis, Anabaena flos-aquae, Aphanizomenon flos-aquae, and Cylindrospermopsis raciborskii.  AFA is sold under the names Klamath Lake Algae, and Klamath blue-green algae.  Actually it is a cyanobacteria as is Spirulina platensis, which I have sold for many years.

The documentary cites a study then misrepresents it.

J AOAC Int. 2015 Nov-Dec;98(6):1559-65. doi: 10.5740/jaoacint.15-084.
Determination of β-N-methylamino-L-alanine, N-(2-aminoethyl)glycine, and Brocatal_JAOACI_BMAA_Validation-page-0022,4-diaminobutyric acid in Food Products Containing Cyanobacteria by Ultra-Performance Liquid Chromatography and Tandem Mass Spectrometry: Single-Laboratory Validation.

Glover WB1, Baker TC, Murch SJ, Brown PN.

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