Inorganic arsenic and trace elements in Ghanaian grain staples

► Arsenic content of Ghanaian rice is higher than in other Ghanaian grain staples. ► Compared to global mean values, Ghanaian rice and maize have low As and Cd content. ► Most rice imports to Ghana have lower Co, Cu, Mn and Zn content than Ghanaian rice. ► Cancer risk posed by Thai rice is slightly higher than for Ghanaian and US rice. ► A shift to multigrain diets would reduce health risks due to dietary As exposure.