San Marzano Tomatoes Histamine Information

San Marzano tomatoes, like other types of tomatoes, contain histamine, contributing towards elevating histamine levels in the body. This might escalate symptoms of those with histamine intolerance. Various sources including the Swiss Interest Group Histamine Intolerance (SIGHI) corroborate this, noting that tomatoes, canned or fresh, have a histamine generating potential of level 1, on a scale of 0 (no reaction) to 3 (strong reaction). However, divergent to many processed tomato products such as ketchup or pizza sauce, San Marzano tomatoes do not undergo a long period of fermentation, a significant factor in histamine generation, thus, they may have relatively lower histamine levels when compared with other products containing tomatoes. Plus, as a whole food, it does not contain additives or preservatives that might liberate histamine, although additional ingredients used in its preparation could play a role. Nevertheless, the precise histamine content in San Marzano tomatoes has not been accurately measured, and individuals' reaction to various foods could be diverse. Therefore, it's recommended that those with histamine intolerance take note of their personal responsiveness to such foods. Foods with consistent reaction patterns like red wine, fermented cheese, vinegar-based products, and certain types of seafood are more likely to increase histamine levels. In contrast, pineapples and papayas, rich in enzymes bromelain and papain, are reported to assist in breaking down excess histamine, potentially reducing overall histamine levels. A key point to remember is that individual circumstances and reactions can vary, and professional medical advice is necessary when dealing with conditions like histamine intolerance. References: - Swiss Interest Group Histamine Intolerance (SIGHI): Histamine Content in Foods - Histamine Intolerance Food List (SIGHI): Fresh Tomatoes, Canned Tomatoes. - Bravo JA, Forsythe P, Chew MV. (2011). Ingestion of Lactobacillus strain regulates emotional behavior and central GABA receptor expression in a mouse via the vagus nerve. Proc Natl Acad Sci U S A. - Maintz L, Novak N. (2011). Histamine and histamine intolerance. Am J Clin Nutr. - Smolinska S, Jutel M, Crameri R, O’Mahony L. (2014). Histamine and gut mucosal immune regulation. Allergy.