What About Us?

Well, if you've got IBS & are open to learning about yourself...

...you’ve come to the right place.

Are you struggling...

  • Tummy pain? Cramping?
  • Diarrhea? Constipation?
  • Restricted diet?

Are you searching...

  • Gut Health? Healing?
  • Free of tummy pain?
  • Return to a normal life?

ReThink 

Enabling IBS Breakthrough Healing

ReThink is designed specifically to help people with difficult diseases, like IBS. We exist to help you live a healthier life. Using evidence-based Tools, Principles, and life-transforming Practices, we’ve helped hundreds of people from around the world to dramatically reduce symptoms, and lead healthier, happier, more satisfying lives.

Our Mission

Our mission is to have a profound, lifelong impact on individuals so that they are significantly happier and have a deeper, more effective understanding of themselves, others, and life.

Our Values

We recognize the human realities of personal growth:

1. We’re All Different - Each individual has had unique life experiences and  is distinctly different. We welcome the unique qualities and thinking of individuals.

2. Different Approaches Work - Many different approaches can enable us to be healthier and happier. 

3. Clarity - Human beings work well with clarity. Our work is communicated clearly, and we are open about our Work.

4. Knowledge Isn't Enough - Like any wellness program, merely buying the book or taking the course does not, in itself, produce results. We must put newly learned principles into practice. To that end, ReThink offers online and live experiential education, one-on-one and group coaching, and practice habit development.

What Others Say

"Guy, someday you may be the one who writes the books."
– Ken Keyes, Jr.
Teacher & multi-million-copy best-selling author, St. Mary, Kentucky

"This work is the best thing that's ever happened to me. 
It has made me a more open person. Thank you!"
– Mimi Mugler, Berkeley, California


"I don’t know that I would be the same person 
that I am today without your teaching and guidance."
– Nalini Sankar, Mountain View, California 

About Guy Downing 
ReThink CEO & Executive Director

I’ve taught hundreds of people from around the world the same principles that I used to dramatically reduce my symptoms of severe Irritable Bowel Syndrome (IBS) and Multiple Chemical Sensitivities (MCS). Specifically, I've used ReThink Tools to...

  • Dramatically reduce IBS symptoms after suffering 9 years of severe, clinically-diagnosed IBS in a just a few months. (Please see Disclaimer below.)
  • Escape 14 years of progressively worsening Multiple Chemical Sensitivities in weeks.  (Please see Disclaimer below.)
  • Clearly understand and articulate a possible root cause of the symptoms of IBS and Multiple Chemical Sensitivities.
  • Develop practical, proven, and effective Tools & Principles to enable people to dramatically reduce their symptoms from IBS, MCS, and other diseases.
  • Teach these Principals to hundreds of people from around the world.


We're a Non-Profit Organization

ReThinkTools.com is owned and our research is conducted by ReThink Research, Inc., a U.S. federally recognized 501(c)(3) tax-exempt, non-profit organization, EIN: 82-0952390. As a non-profit, we have no owners or shareholders, and no board members or other individuals who profit financially from the organization. 

All revenues, grants, and donations go entirely to support our research, development, and educational and practice management programs in the U.S. and around the world. Our service delivery model was developed with assistance from startup incubator Y Combinator.

Questions? Learn more? Register for our free webinar, here.

ReThink Disease