Histamine intolerance during perimenopause may worsen due to fluctuating estrogen levels, declining progesterone, mast cell activation, gut dysfunction, inflammation, and nervous system stress. Symptoms such as anxiety, insomnia, flushing, migraines, food sensitivities, and palpitations may intensify during hormonal transition years as estrogen and histamine influence each other bidirectionally.
Read MoreMast cell activation syndrome (MCAS) causes multi-system symptoms including flushing, hives, digestive upset, palpitations, and brain fog. This article discusses diagnosis criteria, triggers, and evidence-informed stabilization strategies.
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