Have you ever felt anxious, restless, or mentally foggy for no apparent reason—especially during allergy season? While stress and lifestyle factors play a role, histamine may be an overlooked culprit.

Most people associate histamine with allergies—sneezing, itchy eyes, or hay fever—but its effects go beyond that. Histamine is actually a neurotransmitter and immune system messenger that influences brain function, digestion, and overall nervous system health. When it builds up in the body, it can trigger symptoms that closely resemble anxiety, including…