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Close Examination of a ZYTO Electrodermal Screening System
1Stephen Barrett, MD, a retired psychiatrist who lives near Chapel Hill, North Carolina, has achieved national renown as an author, editor, and consumer advocate. In addition to heading Quackwatch.com, in 1984, he received an FDA Commissioner's Special Citation Award for Public Service in fighting nutrition quackery.
Missouri Medicine
|September 20, 2018
Summary
Electrodermal screening (EDS) devices claim to detect health issues using skin responses. A self-testing study found EDS assessments and recommendations to be unreliable and potentially harmful, warranting a ban on their use.
Area of Science:
- Integrative and Complementary Medicine
- Medical Device Evaluation
- Consumer Health Technology
Background:
- Electrodermal screening (EDS) devices are marketed to identify health problems and recommend interventions.
- These devices are widely used to promote sales of supplements and diet programs.
- Concerns exist regarding the scientific validity and safety of EDS devices.
Purpose of the Study:
- To evaluate the reliability and safety of a leading Electrodermal screening (EDS) device.
- To assess the accuracy of EDS-generated health assessments and recommendations.
- To determine the potential risks associated with the clinical use of EDS.
Main Methods:
- A single participant conducted 43 self-tests using a prominent EDS device over a 10-day period.
- Repeated assessments were performed to observe consistency and validity of results.
- The accuracy of the device's health assessments and recommended actions was critically reviewed.
Main Results:
- The EDS device produced inconsistent and nonsensical health assessments across repeated tests.
- Recommendations provided by the device were deemed unfounded and potentially dangerous.
- The study found no scientific basis for the claims made by the EDS device.
Conclusions:
- Electrodermal screening (EDS) devices lack scientific validity and provide unreliable health information.
- The use of EDS devices for health assessments and recommendations poses potential risks to consumers.
- A prohibition on the sale and clinical application of EDS devices is recommended.
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