The cause of Carcinoid Cancer is unknown. No link has been found to family history, smoking, chemicals in the workplace or foods. As to gender the incidence between Caucasian men and women is equal. Statistically African-American men seem to have a slightly higher risk than women but the reason is not known. Persons with certain diseases that damage the stomach and reduce acid production have a higher risk of developing stomach carcinoids but their risk for other organs is not affected.
Carcinoids are likely to grow for many years without producing any symptoms.
Because of this most patients are diagnosed in advanced stages. This is the most common sign of carcinoid cancer and often preceeds flushing by years. This is the second most common symptom of Carcinoid Cancer. This can be triggered by eating a large meal, alcohol consumption, tomatoes, fatty foods, coffee or other caffinated beverages, chocolate and spicy foods. Any kind of emotional distress and heavy exercise may also trigger flushing in excess of what is appropriate to the activity.