The main purpose of the digestive system is to break down food into nutrients that the body can absorb and utilize for energy, growth, and cell repair. The digestive process begins in the mouth and continues through the esophagus, stomach, and intestines. Enzymes and digestive juices help to chemically break down food into smaller, absorbable molecules. Nutrients such as carbohydrates, proteins, fats, vitamins, and minerals are then absorbed through the intestinal walls into the bloodstream. Additionally, the digestive system also plays a role in excreting waste products and maintaining fluid and electrolyte balance, making it essential for overall health.