What is Tyramine and Why Does It Matter?
Tyramine is a natural compound derived from the amino acid tyrosine, and its levels increase as foods age, ferment, or spoil. Most people's bodies process tyramine using the enzyme monoamine oxidase (MAO). However, this process is inhibited in individuals taking MAOI medications, leading to a buildup of tyramine that can dangerously elevate blood pressure (hypertensive crisis). Symptoms include severe headaches and palpitations. Tyramine can also trigger migraines in sensitive individuals. Therefore, a low-tyramine diet is necessary for some people.
Foods with the Highest Tyramine Content
Foods that are aged, fermented, cured, or not stored correctly typically have the highest tyramine levels. The longer a food ages, the more tyramine it's likely to contain.
Aged and Fermented Cheeses
Aged cheeses are a major source of tyramine, with levels rising significantly during the aging process.
- Examples: Aged cheddar, blue cheese, Stilton, Gorgonzola, feta, Swiss, Muenster, and parmesan.
- Even softer fermented cheeses like Brie and Camembert can be high in tyramine.
Cured, Processed, and Smoked Meats
These meats often have high tyramine content.
- Examples: Salami, pepperoni, mortadella, aged sausages, and smoked or pickled fish.
- Bacon, hot dogs, and bologna may also be problematic.
Fermented Soy Products and Sauces
Fermented soy products are particularly rich in tyramine.
- Examples: Soy sauce, miso, fermented tofu, and fermented bean curd.
- Other high-tyramine condiments include teriyaki sauce and bouillon-based sauces.
Alcoholic Beverages
Some alcoholic drinks, especially fermented and unpasteurized types, contain high tyramine levels.
- Examples: Tap beer, red wine (such as Chianti and vermouth), and sherry.
- Tyramine in wine varies, so caution is advised.
Other Significant Sources
- Yeast Extracts: Products like Marmite and Vegemite are concentrated sources.
- Pickled and Fermented Vegetables: Sauerkraut and kimchi are high in tyramine.
- Certain Fruits and Beans: Overripe bananas and avocados, fava beans, and some citrus fruits may have higher levels.
- Improperly Stored Foods: Any food that is not stored correctly or is past its prime will have increased tyramine.
Managing a Low-Tyramine Diet
Managing tyramine intake involves careful food choices, preparation, and storage. The focus should be on fresh, minimally processed foods.
Practical Guidelines for Reducing Tyramine
- Choose Fresh: Opt for fresh meat, poultry, and fish and consume or freeze them promptly.
- Select Fresh Dairy: Choose fresh dairy like milk, cottage cheese, and fresh mozzarella over aged varieties.
- Store Properly: Keep all food, especially proteins, refrigerated or frozen to slow tyramine formation.
- Limit Leftovers: Tyramine increases in leftovers. Consume them within a day or two or avoid them if sensitive.
- Read Labels: Check ingredient lists for fermented items like soy sauce, miso, and yeast extracts in sauces and condiments.
High vs. Low Tyramine Foods: A Comparison
| Food Category | High-Tyramine Examples | Low-Tyramine Alternatives |
|---|---|---|
| Cheese | Aged cheddar, blue cheese, Gorgonzola, parmesan, feta | American cheese, cottage cheese, cream cheese, ricotta, fresh mozzarella |
| Meats | Salami, pepperoni, dried sausages, cured meats, smoked fish | Fresh beef, chicken, pork, or fish (cooked the same day) |
| Fruits & Veggies | Overripe bananas, overripe avocados, fava bean pods, sauerkraut, kimchi | Most fresh or canned fruits and vegetables, raisins |
| Condiments & Sauces | Soy sauce, miso, teriyaki sauce, yeast extracts (Marmite) | Ketchup, mustard, Worcestershire sauce, regular salad dressings |
| Beverages | Tap or home-brewed beer, red wine (Chianti, vermouth) | Bottled or canned beer, gin, rum, vodka, water, clear sodas |
Conclusion
Navigating a low-tyramine diet, crucial for individuals on MAOIs and potentially helpful for migraine sufferers, centers on avoiding aged, fermented, cured, or improperly stored foods. Foods consistently highest in tyramine include aged cheeses, cured meats, fermented soy products, and certain alcoholic drinks. Prioritizing fresh, minimally processed foods and proper storage helps minimize tyramine intake and its associated risks. Always consult a healthcare professional or registered dietitian for personalized dietary advice, especially if you are taking medication. For additional guidance on managing a low-tyramine diet, resources like the Mayo Clinic offer valuable information.