About This Blog


Lake Tahoe.


The Paradigm Change blog focuses on exploring the connection between mold toxins (and other toxicity) and chronic multisystem illnesses (such as ME/CFS, fibromyalgia, POTS, MCAS, chronic Lyme, MCS/EI and others).

The disease of ME/CFS (myalgic encephalomyelitis/chronic fatigue syndrome) – and in particular the Lake Tahoe outbreak of the disease in the 1980’s – also has been a particular focus of the blog.

The main authors are Lisa Petrison and Erik Johnson, with frequent additional essays by guest authors.


About Paradigm Change:

More basic information about the role of mold toxins in chronic illness suitable to those new to the topic may be found on the Paradigm Change website.

Go To Paradigm Change Website


The Living Clean in a Dirty World blog is run by Paradigm Change and provides links to a wide variety of information resources relevant to the topic of recovering from mold-related illness.

Go To Living Clean Blog


Paradigm Change also runs a website called Myalgic Encephalomyelitis providing information about ME and CFS.

Go To Myalgic Encephalomyelitis Website


Mold Avoiders (a spin-off from Paradigm Change) is run by Lisa Petrison and provides information relevant to those pursuing Erik Johnson’s approach to mold avoidance.

Go To Mold Avoiders Website



About Lisa Petrison:

Lisa was a tenure-track professor in business at Loyola University Chicago before becoming disabled with CFS in 2001. Since 2008, she has focused her attention on issues related to toxic mold and other environmental toxicity. She is currently mostly recovered from the illness. Her Ph.D. is in marketing and social psychology from the Kellogg School of Management at Northwestern University.


About Erik Johnson:

Erik Johnson has been focused on the issue of the effects of toxic mold and other biotoxins on human health since the early 1980’s, when he first became ill with ME/CFS as part of the Lake Tahoe epidemic. He has maintained control over his symptoms – including working full-time and exercising vigorously on a regular basis – through mold avoidance since 1998.


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