10/28/2026
What if some of the symptoms you’re experiencing during perimenopause aren’t just about your hormone levels, but also how your immune system is responding to those changes?
One of the presentations I particularly appreciated at this year’s ILADS conference was Dr. Tania Dempsey’s discussion of the relationship between hormones and mast cells. I had the opportunity to speak with her afterward about some of the clinical connections I was making, which made the session even more valuable.
Mast cells are an essential part of our immune system. They help protect us from threats and coordinate inflammatory responses. But when they’re activated inappropriately, they can contribute to symptoms affecting multiple areas of the body.
What I found particularly interesting was the discussion around how mast cells respond to change. Hormonal fluctuations can influence their activity, but so can infection, inflammation, and environmental factors. Where those mast cells are located also influences how their activation may manifest.
This becomes especially relevant during perimenopause. Estrogen doesn’t simply decline in a predictable, steady fashion. It can fluctuate dramatically, and those shifts may influence mast-cell activity in susceptible women. It’s one possible explanation for why some women notice changes in flushing, headaches, digestive symptoms, or other forms of reactivity during this stage of life.
It also reinforces an important clinical distinction: symptoms that look similar don’t necessarily have the same underlying cause. A typical menopausal hot flash and mast-cell-related flushing may feel alike, but understanding the timing, associated symptoms, and potential triggers can help guide a more meaningful evaluation.
Of course, not every woman experiencing these symptoms has mast cell activation syndrome (MCAS), and not every symptom is driven by hormones. The point is to recognize that these systems interact, rather than evaluating each one in isolation.
This is one of the reasons I place so much value on a thorough clinical history and understanding how symptoms develop and change over time. Laboratory results provide important information, but they are only one part of the picture.
Sometimes it’s not just about where your hormone levels are. It’s about how your body is responding to the changes.