McMillan Research
The world needs health guides.
Most of them have already lived through it.
If you have been unwell for years, you understand something that cannot be taught quickly. We help you use it — first for yourself, and then, if you want to, for someone else.
Where do you fit?
Five questions. About two minutes.
Not sure? Answer the questions first — they will point you to one.
Three ways in.
ROOT Foundations
Understand your own illness. Self-paced, plain English, no medical background needed.
Start here
ROOT Healer Academy
Learn to guide others safely. An ongoing membership with live question sessions, not a one-off course.
By application
Clinical Reasoning
For regulated clinicians. Mechanism, differentials and diagnostic safety.
In development
Why guides.
Far more people need help than there are clinicians with the hours this takes.
A guide is not a doctor. A guide is someone who understands the pattern and walks alongside.
The best guides are often the ones who have already been through it.
What we will not claim.
The immune model is a hypothesis. Not settled science.
No cures, and no promises about income.
Guides educate. They do not diagnose or treat.
See your own doctor first. Ordinary conditions look like this too.
Built on peer-reviewed work: McMillan P, Turner AJ, Uhal BD. The Central Role of Macrophages in Long COVID Pathophysiology. Int. J. Mol. Sci. 2026; 27: 313. doi.org/10.3390/ijms27010313
These programmes are educational. They do not provide diagnosis or treatment and make no cure claims. The macrophage-centred model is presented throughout as a hypothesis. ROOT Healer certification is a certificate of training in this framework and is not a medical qualification. CPD accreditation for the clinician course is being pursued and is not currently held. © 2026 McMillan Research.