Why Fava Beans Can Kill You

For some people, fava beans can be deadly. What is it about this little legume that makes it so?

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Image Sources:
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
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Sources:
https://ghr.nlm.nih.gov/condition/glu...
https://www.ncbi.nlm.nih.gov/pmc/arti...
https://www.ncbi.nlm.nih.gov/pmc/arti...
https://www.researchgate.net/publicat...
http://www.bloodjournal.org/content/9...