04/22/2026
Your hormones and immune system are besties, until they’re not.
Estrogen fuels histamine, histamine fuels estrogen — rinse and repeat. When you bring MCAS, histamine intolerance, hormone shifts, or perimenopause into that cycle, it’s a recipe for new or worsened allergies, anxiety, brain fog, bad sleep, and heart palpitations.
The symptoms look identical to “normal” peri, and usually they’re treated as such, making it hard for so many women to find relief and adequate support.
Hormones and mast cell disorders are deeply connected! Treating them with a standard protocol, or even dismissing one thing as the other, rarely helps.
Personalized care respects the complexity of your body.
If you’re curious about what individualized care looks like, make sure you follow for more!! And check out part 1 (Your immune system might be overreacting to basically everything) for an in-depth look at MCAS!
With care, Magen | Mystic Valley Sexual Wellness
FNP-BC, MSCP, CSC
📍Melrose & Boston, MA