While the world's farmers produce more than enough food to feed the planet's 8 billion people, United Nations Secretary-General António Guterres said "hunger and malnutrition are a fact of life" for billions, as 2.8 billion people cannot afford a healthy diet. In a message ahead of Wednesday's World Food Day, Guterres said 733 million people worldwide lack food because of "conflict, marginalization, climate change, poverty and economic downturns.