This piece is about IgE mediated food allergies. Non-celiac gluten sensitivity is a different medical condition outside of scope.
Hypothetically it’s possible that a given diet can be useful for one medical condition and not useful for another. For example the ketogenic diet: it’s been in longstanding use as a niche medical diet to reduce seizures in children. There’s preliminary research that it might be beneficial in certain other disorders. Here’s a summary about that.
Recently the ketogenic diet gained popular attention and people are trying it for other purposes. Here’s where rumor and spin become problematic: some of those other medical research has to do with immune disorders. So nonprofessionals with more enthusiasm than understanding figure allergies are an immune disorder so they try it for food allergies.
Yet there’s no evidence to indicate that keto has any effect on food allergies. The only medical journal paper relating allergies to the ketogenic diet warns against it because of the risk of nutritional deficiencies. That’s a legitimate danger.
The ketogenic diet has a lot more evidence behind it than NAET has.
If you believe that NAET has unrecognized benefits then commenting at my article on Medium will not make a difference. I am not a board certified allergist, this is not a medical journal, and Medium is not a scientific publisher. Not stating these things to be dismissive or sarcastic. Science just isn’t done here.
Here’s a path you can pursue instead.
Those friends you say were helped by NAET, urge them to offer themselves as case studies. A case study has a specific technical meaning (it isn’t a testimonial) but it’s a first step toward scientific evidence. Better yet, they could offer themselves as test subjects for a clinical trial on NAET. Any treatment that really works should hold up under clinical trials.