What the evidence says

This guide concerns extremely low-frequency magnetic fields, including 50/60 Hz power-frequency fields. It does not treat all “EMF” as interchangeable.

In 2002, the International Agency for Research on Cancer classified ELF magnetic fields as possibly carcinogenic to humans (Group 2B), principally on limited evidence concerning childhood leukemia. The classification is not proof that ordinary household exposure causes cancer. Read IARC Volume 80.

The World Health Organization's 2007 assessment described an association in older pooled studies at average residential exposures above roughly 0.3–0.4 µT. It also identified possible bias, a lack of an accepted mechanism at these low levels, and largely negative animal studies. WHO concluded that the evidence was not strong enough to establish causation. Read the WHO assessment.

An exposure category is not a safety boundary. The 0.3–0.4 µT range used in research is not a proven dividing line between a safe and an unsafe home. A brief meter reading is also not the long-term average considered in those studies.

The European Commission's SCHEER review, adopted in 2024, described the epidemiological evidence concerning childhood leukemia as weak-to-moderate, while assessing the overall evidence for an association as weak. It found too little evidence to establish a dose–response curve. Read the newer review.

Why findings differ

Different reviews include different studies, populations, and approaches to estimating exposure. Two examples illustrate why a single headline is not the whole story:

  • Seomun, Lee, and Park (2021): this meta-analysis reported an association with childhood leukemia in higher exposure categories. Its pooled evidence was observational, exposure methods varied, and cohort studies were not included in the pooling. It cannot establish causation. Read the study.
  • Amoon and colleagues (2022): this newer pooled analysis of four studies did not find an increased association in its highest exposure category. The authors considered methodological differences and chance among possible explanations for differences from earlier findings. It is not definitive proof that no risk exists. Read the study.

The National Cancer Institute also describes mixed findings and the difficulty of drawing firm conclusions from the relatively small numbers of highly exposed children. Read the NCI overview.

What it means for a product

A reduction in a measured magnetic field is an engineering result. It does not, by itself, show that a device prevents disease, treats symptoms, or improves sleep. The research linked here does not establish any of those benefits for EMF Oasis™.

Our technology is in development, with launch planned for 2027. This site does not present an independently validated product-performance claim or a clinical trial of the product. Personal medical decisions belong with a qualified healthcare professional.

Our approach to evidence

Prepared by EMF Oasis™, the developer of a planned magnetic-field reduction product. That commercial interest matters when reading our interpretation. This is a selected, source-based educational overview, not a systematic review or an independent medical assessment.

We distinguish the type of field, study design, reported finding, and uncertainty. We link to original research and public-health assessments, including findings that do not support an association. Sources are dated so older evaluations can be read alongside newer work.

Any future performance report should identify the tested configuration, locations, frequencies, equipment, baseline, and uncertainty. We will not treat another laboratory's result as a result for our product. No reviewer credentials or third-party endorsement are implied by the citations below.

Questions or corrections? Contact hello@emf-oasis.com.

Read the sources

  1. IARC: Non-ionizing Radiation, Part 1, Volume 802002 · Hazard evaluation. Also included in our research reference collection.
  2. WHO: Exposure to extremely low frequency fieldsJune 2007 · Public-health summary of the assessment associated with Environmental Health Criteria 238.
  3. European Commission SCHEER: 1 Hz–100 kHz review and final-opinion linkFinal opinion adopted May 17, 2024 · A newer assessment than the 2015 SCENIHR report in our reference collection.
  4. Seomun, Lee & Park: Exposure to extremely low-frequency magnetic fields and childhood cancer2021 · Systematic review and meta-analysis. Also included in our research reference collection.
  5. Amoon et al.: Pooled analysis of recent studies of magnetic fields and childhood leukemia2022 journal issue; published online September 2021 · Pooled individual-level study data.
  6. National Cancer Institute: Electromagnetic Fields and CancerReviewed May 30, 2022 · Public-facing overview of the evidence.

Educational information, not medical advice. EMF Oasis™ is developing a product in this field. Read our approach to evidence.