Final answer:
The number of people who are chronically undernourished or living without food security in the world is around 810 million.
Step-by-step explanation:
According to various sources, including the United Nations and the Food and Agriculture Organization, the number of people who are chronically undernourished or living without food security in the world is around 810 million. This means that about one in nine people globally do not have enough to eat. The problem of undernourishment is particularly prevalent in low- and middle-income countries, where poverty and lack of access to nutritious food are major contributing factors.