What Is the Toxin in Buckwheat?
                                
                                
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                                    4 min read                                
                            
                                Though buckwheat is generally considered a healthy, gluten-free pseudo-cereal, it does contain a phototoxic compound called fagopyrin. This natural substance is responsible for a condition known as fagopyrism, a photosensitivity reaction that primarily affects livestock but can also impact humans under specific, rare circumstances.