Which symptom is commonly associated with food intolerance?

Nausea is a symptom commonly associated with food intolerance because it is one of the body's reactions when it struggles to properly digest certain foods. Food intolerance occurs when a person's digestive system is unable to break down specific components of food, often leading to gastrointestinal distress. This distress can manifest as nausea, bloating, gas, cramps, and diarrhea. Unlike food allergies, which can provoke immediate and severe responses like anaphylaxis or skin rashes due to the immune system's reaction, food intolerances typically result in delayed responses that are less severe but uncomfortable, such as nausea. This symptom acts as a signal that the body is reacting adversely to a specific food, even though it does not invoke an immune response like the other conditions mentioned.