
The body normally breaks down histamine using an enzyme called DAO (Diamine Oxidase).
However, histamine levels may rise when:
• The gut lining is damaged
• There is an imbalance of gut bacteria
• Certain medications interfere with DAO production
• The diet is high in fermented or aged foods
• Stress and inflammation increase histamine release
Supporting the gut is often one of the most effective ways to improve histamine tolerance.
Common Signs of Histamine Reactions
Histamine reactions can look different for each person. Symptoms may appear immediately after eating or several hours later.
Possible symptoms include:
• Bloating or stomach pain
• Acid reflux or heartburn
• Skin rashes or itching
• Flushing of the face
• Headaches or migraines
• Runny nose or sinus congestion
• Rapid heartbeat
• Anxiety or restlessness
• Fatigue
• Brain fog
These symptoms are often worse during times of stress, poor sleep, hormonal changes, or when the gut is inflamed.
