Blue green algae, chlorella, and spirulina are all advertised as being beneficial, but they could be harmful because they are often contaminated with algal toxins. This is the third in a three video series. If you missed the previous videos, check out Toxins in Blue Green Algae, Like Klamath Lake AFA (Aphanizomenon ?os aquae) (https://nutritionfacts.org/video/toxins in blue green algae like klamath lake afa aphanizomenon ?os aquae) and The Benefits and Dangers of Chlorella (https://nutritionfacts.org/video/the benefits and dangers of chlorella). I mentioned the videos The Risks of Shark Cartilage Supplements (https://nutritionfacts.org/video/the risks of shark cartilage supplements/) and Infant Seizures Linked to Mother’s Spirulina Use (https://nutritionfacts.org/video/infant seizures linked to mothers spirulina use/), as well as the link to ALS. See ALS (Lou Gehrig’s Disease): Fishing for Answers (https://nutritionfacts.org/video/als lou gehrigs disease fishing for answers/) and Diet and Amyotrophic Lateral Sclerosis (ALS) (https://nutritionfacts.org/video/diet and amyotrophic lateral sclerosis als/). New subscribers to our e newsletter always receive a free gift. Get yours here: https://nutritionfacts.org/subscribe/. Have a question about this video? Leave it in the comment section at http://nutritionfacts.org/video/the benefits and side effects of spirulina and someone on the NutritionFacts.org team will try to answer it. Want to get a list of links to all the scientific sources used in this video? Click on Sources Cited at https://nutritionfacts.org/video/the benefits and side effects of spirulina. You’ll also find a transcript and acknowledgements for the video, my blog and speaking tour schedule, and an easy way to search (by translated language even) through our videos spanning more than 2,000 health topics. Thanks for watching. I hope you’ll join in the evidence based nutrition revolution! Michael Greger, MD FACLM Captions for this video are available in several languages; you can find yours in the video settings. View important information about our translated resources: https://nutritionfacts.org/translations info/ https://NutritionFacts.org • Subscribe: https://nutritionfacts.org/subscribe • Donate: https://nutritionfacts.org/donate • Podcast : https://nutritionfacts.org/audio • Books: https://nutritionfacts.org/books • Shop: https://drgreger.org • Facebook: https://www.facebook.com/NutritionFacts.org • Twitter: https://twitter.com/nutrition_facts • Instagram: https://www.instagram.com/nutrition_facts_org