E150 | Histamine Overload In Perimenopause

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Wine starts making you anxious, your sleep breaks at 2 a.m., your heart races for no clear reason, and suddenly your body feels “reactive” to everything. If you’ve been told it’s just perimenopause, we want to offer a more useful lens: histamine intolerance and mast cell activation can mimic a huge list of midlife hormone symptoms, and they often show up hardest in high-achieving, chronically stressed women.

We unpack what histamine actually does beyond seasonal allergies, including how it acts in the brain, the gut, the skin, and the cardiovascular system. We talk through the two key histamine clearance pathways, DAO in the gut and HNMT through methylation, and why perimenopause can expose weak links like gut inflammation, lower stomach acid, SIBO patterns, low B vitamins, and long-term under-fuelling. We also connect the dots between cortisol dysregulation, blood sugar swings, sympathetic overdrive, and why “wired but exhausted” can be a mast cell clue.

Then we get into the confusing part: why hormone replacement therapy can make some women feel worse at first. Estrogen can stimulate mast cells to release histamine, which can ramp up anxiety, insomnia, migraines, breast tenderness, and fluid retention when the foundation isn’t stable yet. We share a practical, sane sequence to start stabilizing, including lifestyle moves, gut support, nervous system regulation, and gentle supplement options, so hormones have a better chance of working the way you hoped they would.

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