Shellfish, including clams, crab, shrimp, and lobster, not only have high levels of histamine but also act as histamine liberators by causing the body to release natural histamine into the bloodstream.
Aged cheeses (such as parmesan, gouda, cheddar, and Swiss cheese) all have high levels of histamine, while fresh cheeses (including mozzarella, mascarpone, and ricotta) are rated as safe for those with histamine sensitivity. Look for unfermented cheeses with minimal additives as low-histamine options.

This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.