> Nori contains toxic metals (arsenic and cadmium), whose levels are highly variable among nori products. It also contains amphipod allergens that can cause ser

> Nori contains toxic metals (arsenic and cadmium), whose levels are highly variable among nori products. It also contains amphipod allergens that can cause serious allergic reactions, especially in highly sensitized crustacean-allergic people. Therefore, daily consumption of high amounts of dried nori is discouraged https://en.wikipedia.org/wiki/Nori https://en.wikipedia.org/wiki/Nori