Food is essential for survival but many around the world do not have reliable access to enough nutritious food. Hunger exists in degrees from acute to chronic to hidden and is caused by factors like drought, poverty, and unequal access to resources. Around 925 million people do not have enough to eat, with 65% living in just seven highly populated countries. Tree planting is proposed as a solution to prevent further loss of arable land and help increase future food production, though it will take time. Achieving global food security and nutrition will require sustainable and equitable food systems.