Your immune system is a security guard who never got the memo.

Zebby's MCAS is for everyone navigating Mast Cell Activation Syndrome — the immune-system dysregulation that's the third leg of the trifecta (with EDS and POTS) for many spoonies, and the diagnosis a lot of people land on after years of unexplained reactions.

We cover what the research is actually saying about MCAS, low-histamine eating patterns (NOT a diet — a flare-day tool), the difference between MCAS and ordinary allergies, and the slow process of building a tolerance map of foods, environments, and medications.

We don't recommend supplements. We don't recommend medications. We surface what the mast cell research says, what the community has tested, and what your allergist or immunologist might ask you to track.

What we cover

• Know It
• Eat It
• Avoid It
• Stock It
• Care It
• Be It