Tag: Eating food

According to nutrition experts at the NIH, food provides the body with the energy and nutrients necessary for survival, growth, and overall health. But more specifically, what are the two main purposes of eating food that are fundamental to human biology?

The human digestive system is approximately 30 feet long, and the very first stage of food processing within this complex network is ingestion. Ingestion of food is the act of taking substances, including food and liquids, into the body through the mouth, initiating the entire digestive process.