Which dietary item is high in tyramine and may trigger pheochromocytoma symptoms?

• A. Hamburger
• B. Spinach
• C. Aged cheese
• D. Fresh fruit

Answer: (C)

Tyramine-rich foods can provoke a surge of catecholamines, which can worsen or mimic pheochromocytoma symptoms. Aged cheese is classic for its high tyramine content because aging and fermentation increase tyramine levels. When tyramine is ingested, it can trigger a release of norepinephrine, leading to headaches, tachycardia, hypertension, sweating, and anxiety—signs that resemble a pheochromocytoma attack. Therefore, aged cheese is the best answer. Hamburger, spinach, and fresh fruit are not typically high in tyramine and are less likely to trigger these symptoms.