The digestion of fat is handled by the digestive system, particularly the small intestine, with help from bile (produced by the liver) and enzymes (like lipase). Red blood cells play no role in digesting fat. Their main job is to transport oxygen and remove carbon dioxide, not to break down nutrients. Digestion is a complex process involving multiple organs and enzymes, but it has nothing to do with the circulatory tasks performed by red blood cells. Associating fat digestion with red blood cells is a misunderstanding of how the body’s systems work. Fat digestion happens in the gut, not the bloodstream.