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The deeper I dig into histamine, the more I recognize it’s probably the driver for a lot of dysfunctional behavior in people—ADHD, OCD, procrastination, insomnia, rumination.
Histamine is one of the core arousal/wakefulness neurotransmitters and gates dopamine, acetylcholine, glutamate, and the stress axis via H1/H3 receptors. Too little histamine means underaroused; too much means hypervigilant.
In cases of low-level (or even full-blown) allergies and dysregulated mast cell degranulation, chronic nighttime exposure leads to poor sleep. Downregulated H1 receptor expression from chronic agonism then causes poor activation when needed, leading to ADHD and/or procrastination—a functional histamine deficit.
Similarly, chronic excessive histamine drive leads to OCD and rumination because the mind cannot relax in its hypervigilant state, which also causes histamine-driven insomnia.
Two tools that can help:
1. Cyproheptadine is an antihistamine with antiserotonin effects that blocks histamine at the receptor and blunts the cortisol effect driven by excess serotonin (from gut microbes). It also stimulates appetite, so keep that in mind. More of a sledgehammer than...
2. Ketotifen, a mast cell stabilizer, doesn’t cause the drowsiness that cyproheptadine does. It prevents pathological mast cell degranulation and is good for low-grade allergies.
And of course, the Ray Peat Carrot Salad™️ and well-cooked white button mushrooms will bind bacterial endotoxin in the gut, which could be driving the histamine dysfunction leading to the above symptoms.
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