*I am not a doctor, plz research everything for yourself. Consult your doctor before taking anything mentioned in this thread*
Ok, so I bought a nice big bag of Spirulina after speaking to someone with MSA. I've done my research and my findings are that (some?) Spirulina contains BMAA that can cause tau tangles in the brain. They gave a monkey a dose of BMAA the equivalent of someone from Guam would have in their lifetime and the monkeys presented tau tangles. 20% of ppl in Guam die from a neurological disease similar to Parkinsonisms.
So, the interesting bit was about the L-Serine which I have also been looking into. They are saying they think the l-serine prevents the build tau in the monkeys! (If I find their research that led to this belief I'll post it here) They think there may be a link between the algae growing in reservoirs around the uk and the prevalence of new neurological conditions.
I guess I better throw out this Spirulina and buy some l-serine (amino acid) I'm reading that certain Companies say they don't have the neurotoxin BMAA in their Spirulina and they have had theirs tested. Something to do with the methods of growing the stuff. Well I'm not going to take that risk unless someone has some insight into this and can show me how certain brands won't have BMAA.
I found this website with some links to current research.