The organ in the human body that absorbs most of the nutrients from food is the small intestine. After food is partially digested in the stomach, it passes into the small intestine, where most nutrient absorption occurs. The small intestine is approximately 6 meters long and has many folds and villi that increase its surface area, enhancing its ability to absorb nutrients like carbohydrates, proteins, fats, vitamins, and minerals. The absorption occurs primarily in three parts: the duodenum, jejunum, and ileum. This nutrient-rich blood is then transported to the liver for processing before being distributed throughout the body, playing a critical role in overall health and nutrition.