On average, it takes about 24 to 72 hours for food to pass through the human body from the time it is ingested until it is eliminated as waste. This duration can vary depending on factors such as the individual's metabolism, the types of food consumed, and other personal factors. The journey of food through the digestive system involves various stages, including ingestion, digestion, absorption of nutrients, and elimination of waste. The exact time it takes for food to pass through the body can differ from person to person and can be influenced by factors such as diet, hydration, and overall health.