Golden rice was genetically engineered to produce beta-carotene in the grain to address vitamin A deficiency. Over 100 million people in Asia and Africa suffer from vitamin A deficiency, which can cause blindness and death. Rice is a staple food in these regions. The original golden rice produced low levels of beta-carotene, but a new variety called Golden Rice 2 produces much higher levels. Golden rice is still undergoing field tests and has faced controversy from groups opposed to GMOs, though supporters argue it could help address malnutrition if approved.