The document discusses hunger and its causes. Hunger is defined as a lack of sufficient food, water, and nutrition for the body's needs. It can lead to serious health issues like malnutrition and starvation. Common causes of hunger include poverty, lack of food supply during wars or natural disasters, climate issues, food wastage, and high food prices that make food unaffordable for many. Statistics show that while over 1 billion people suffered from malnutrition in 1990-1992, that number has declined but over 800 million people still experienced malnutrition as recently as 2010-2012.