... I've read a flurry of medical reports on a study that shark fins(& their cartilage) were found to contain large amounts of a neurotoxin BMAA(beta N-methylamino L-alanine) linked to amyotrophic lateral sclerosis/parkinson's dementia complex. I've been experiencing some, while minimal, similar symptoms to these disorders and I'm wondering if anyone else has had problems following use of shark cartilage pills or any information that could help?