Food is any substance, typically from plant, animal, or fungal sources, consumed by an organism to provide nutritional support, energy, and maintain life through essential components like carbohydrates, fats, and proteins. For humans, who are highly adaptable omnivores, the majority of food energy is supplied by an industrial system that relies on intensive agriculture and complex processing. This modern food system is a major contributor to climate change, accounting for up to 37% of global greenhouse gas emissions due to its heavy dependence on fossil fuels. Beyond its environmental footprint, food systems profoundly influence critical social and political issues like sustainability, biological diversity, and global food security. International organizations, such as the Food and Agriculture Organization (FAO) and the World Food Programme, actively monitor and work to ensure food safety and accessibility worldwide.