Yes, certain dietary factors, such as consuming red meat, certain vegetables, or medications like aspirin or non-steroidal anti-inflammatory drugs (NSAIDs), can potentially cause occult bleeding in the digestive tract. However, the Fecal Immunochemical Test (FIT) is less prone to false-positive results from dietary sources compared to the Guaiac-based Fecal Occult Blood Test (gFOBT).