The United Nations has acknowledged that it previously overestimated the number of hungry people worldwide. A new study shows about 870 million people are undernourished, which the UN calls "unacceptable". While the UN once reported over 1 billion hungry, more accurate data now indicates hunger has improved more than thought, though nearly 870 million still face malnutrition, over 12% globally. Africa especially struggles, with more going hungry there. The UN calls for economic growth and opportunities for vulnerable communities, as well as good governance and political stability to develop conditions to reduce hunger long-term.