Some foods naturally contain high levels of histamine or encourage histamine release in the body.

Common high-histamine foods include:

Fermented foods
• Sauerkraut
• Kombucha
• Vinegar
• Soy sauce

Aged foods
• Aged cheeses
• Cured meats
• Salami
• Ham

Certain fish
• Tuna
• Mackerel
• Sardines

Other foods
• Tomatoes
• Spinach
• Avocado
• Alcohol
• Chocolate

Leftover foods can also become higher in histamine the longer they sit, especially meat and fish.