161- Mast Cell Activation Syndrome and Environmental Toxins with Beth O’Hara

By Bryan Carroll CFMP, NTP, FAFS

October 21, 2021

When you are exposed to something potentially dangerous to the body, your immune system kicks in to protect you as best it can. There are multiple lines of defense within the immune system to stop any type of pathogen.

But sometimes certain parts of the immune system respond too strongly, and it can cause a bunch of other issues. One of these responses are called Mast Cell Activation Syndrome, and it is pretty common in people who have been exposed to a lot of environmental toxins such as mold.

So Beth O'Hara is on the show to teach us how to reduce MCAS if we are exposed to environmental toxins.

What To Expect From This Episode

  • Why Mast Cell Activation Syndrome is one of the most underrecognized syndrome impacting our population
  • How mast cells can overreact within the body
  • Why are moldy environments so toxic to the body
  • Steps to reduce Mast Cell Activation Syndrome and take back control of your immune system


  • [0:00] Welcome to the Summit For Wellness Podcast
  • [2:15] What is Beth O'Hara's background and what made her interested in Mast Cell Activation Syndrome
  • [9:00] Beth dealt with Lyme, Bartonella, and Mold all simultaneously
  • [10:15] I dealt with Mold Toxicity for 12 weeks and it felt like an eternity
  • [10:45] Why you should know about Mast Cell Activation Syndrome
  • [18:00] If someone is trying to understand what MCAS might be like for someone, is our response to seasonal allergies be a mildly similar experience
  • [18:45] Can you test for MCAS
  • [23:15] The current testing is very expensive and can be thousands of dollars
  • [25:00] Why is it that people in the same environment can have completely different immune responses to the environment
  • [29:00] Exposures to certain environments can cause a lot of stress to our systems
  • [31:00] Every system in the body works together, and specialists have a hard time seeing the entire picture of how the nervous system impacts digestive system
  • [32:15] Once you have an MCAS event, is it easier to have more events happen
  • [36:00] What percentage of the population spends most of their time in moldy environments without knowing it
  • [38:00] Is the reason that buildings aren't being tested more often for mold because it would cost too much to repair all these buildings 
  • [41:30] Water damage starts to grow mold within 24 hours, so if you don't remove these materials, the mold will take over
  • [42:30] What are the first steps to treating Mast Cell Activation Syndrome
  • [46:30] Final thoughts from Beth O'Hara on MCAS and how people can recover from it
  • [50:45] What are Beth's favorite binders
  • [51:30] Can you take binders with other foods and supplements

Resources From This Episode

Some of these resources may contain affiliate links, which provides a small commission to me (at no extra expense to you).

Transcript For Episode (Transcripts aren't even close to 100% Accurate)

Learn More About Beth O'Hara

Website: MastCell360.com

Social Media: Facebook

Learn from Beth O'Hara about Mast Cell Activation Syndrome

Learn from Beth O'Hara about Mast Cell Activation Syndrome

About the author

Bryan Carroll CFMP, NTP, FAFS

Bryan Carroll is a certified Functional Medicine Practitioner and Movement Therapist who helps the outdoors community to reduce injuries and improve their health so they can get back to exploring nature. His big health crisis from mold exposure taught him the importance of finding the root causes to illnesses so you can take back control of your life. He is also the host of the Summit For Wellness Podcast.

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