EPISODE · Apr 1, 2026 · 7 MIN
248: Awake at 3am? The Mast Cell Connection (MCAS)
from The Sleep Detective podcast: why you can't sleep and how to fix it · host Martha Lewis
Ready to find out why you can’t sleep and get a step-by-step, customized plan to fix it? Schedule a consultation to get started with the Complete Sleep Solution program: https://p.bttr.to/3VJwvDsOver the years working with people who struggle with chronic insomnia, I started noticing a pattern. Some clients who wake up around 2 or 3am often experience things like sudden anxiety at night, temperature changes, skin symptoms, or a racing heart. And those symptoms often point to something most sleep advice never talks about.In this episode, I'll walk you through:How mast cell activity and histamine can wake your body up in the middle of the nightWhy it often happens around 3:00 AMHow to calm mast cells so you can stay asleep00:00 Why You Wake at 3AM01:06 A Client Pattern Emerges01:56 Immune System Not Stress02:04 Quick Program Break02:39 Mast Cells Explained03:30 Histamine as Wake Signal04:14 Why It Peaks Overnight04:44 Menstrual Cycle Connection05:02 What You Can Do05:22 Dinner and Histamine Foods05:59 Calm Your Nervous System06:25 Supplements for Histamine07:08 Fix the Root Causes07:41 Wrap Up and Next Steps
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248: Awake at 3am? The Mast Cell Connection (MCAS)
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