Yes, it's a bogus practice.
But I'll let you decide that for yourself. Here's how the purveyors of NES described their idea in a brochure that was eventually turned over the UK's Advertising Standards Authority:
"NES is a revolutionary approach to health, the culmination of 25 years of work into how physics explains biology - through the mapping of the quantum electrodynamics body-field ... the results are the first accurate map of the human body-field, which acts as the master control system for the physical body (like software on a computer), and the development of a clinical system for restoring optimum health."
The purveyors of this nonsense claim you can take an "Infoceutical" in water that will correct all that ails you.
An infoceutical is a kind of medicine that is "imprinted with information specific to a particular structure in the body-field, thus it affects a specific physiological process. This information corrects distortions in the body-field, returning the body to homeostasis." So called "home" Infoceuticals range in price from $22 to $80.
The brochure then tries to wow the reader with scientific sounding language such as how "the QED information acts as a magnetic signpost to the subatomic particles in your body-field; aligning these particles helps to restore optimal heath ... the NES software is able to 'read' your body-field and compare it to the optimum human body-field, which is encoded into the software. The NES Infoceuticals then provide the proper information (or software) to restore your body's proper functioning."
They claim NES can screen all major organ systems, scan for environmental toxins, for nutritional, musculoskeletal and emotional states, as well as correct for viruses and bacteria infection.
"Correction of these essential criteria can be vital in solving a wide range of complaints, including digestion, weight, muscular, nervous and skin problems as well as fatigue, headaches, and other health problems. After a short time using the Infoceuticals, most clients experience increased health, vitality, mental and emotional clarity."
My goodness! Such a product would amount to a huge medical breakthrough - if it was true.
But it's not.
This hogwash was invented by Peter Fraser, a former high school music teacher from Australia who has no background in medicine or science. He was traveling abroad when he became suddenly interested in alternative health care and soon became involved in Traditional Chinese Medicine, acupuncture, Ayurveda and homeopathy. He now describes himself as a "visionary scientific thinker."
Fraser eventually met a man named Harry Massey who had been suffering from severe chronic fatigue syndrome for 7 years. Massey tried every available treatment to no avail and finally turned to alternatives where he met Fraser. At this point, Fraser had spent 20 years researching what he called the "human body field" and developing remedies that later became NES. Massey agreed to try these remedies and claims to have made a full recovery within two years.
The two men began working together, combining Fraser's "stunning research" with Massey's "entrepreneurial skills and remarkable technological insights." They went on to found NES Health.
As mentioned above, this company has been reported to authorities for its outlandish and unsubstantiated claims, as this website explains.
Does it have the backing of science? Not a shred that I could find. I checked into the backgrounds of the people conducting the clinical trials listed on the website and they all appear to be either NES or other alternative practitioners.
From what I have been able to ascertain, NES is just another version of the same old snake-oil.