Use of Electrical Household Appliances and Risk of All Types of Tumours: A Case-Control Study

Med Sci (Basel) · 2025 · Mixed · Low evidence

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MixedLow evidencePaper 2679

Study snapshot

PublicationMed Sci (Basel) · 2025

Study typecase_control

Reported directionMixed

Evidence ratingLow

Abstract

Category: Epidemiology Tags: EMF, ELF, household appliances, tumour risk, case-control, powerlines, transformer station DOI: 10.3390/medsci13020036 URL: mdpi.com Overview The use of electrical appliances that emit extremely low frequency (ELF) electromagnetic fields (EMF) is increasing globally. These fields have been reported to be associated with several adverse health effects, and the potential link between risk of tumours and use of electronic devices emitting low frequency (LF) EMF is an important area for research. Methods - This multi-hospital-based case-control study analyzed 316 patients to investigate the association of common household electrical appliance use and risk of tumours. Findings - The study showed a below unity risk for most devices. - Slightly increased risk of tumour was observed for computer screen use (Odds Ratio [OR]: 1.13; 95% CI: 0.43-3.02). - Similar increased risk seen for microwave oven use (OR: 1.21; 95% CI: 0.36-4.04). - Significantly, individuals living near electricity transformer stations had a statistically significant elevated risk of tumours (OR: 2.16; 95% CI: 1.30-3.59), clearly indicating a connection between ELF EMF exposure and increased tumour risk. - In contrast, individuals living close to powerlines had an OR of 0.98, suggesting no elevated risk in that subgroup. Conclusion This pilot study provides primary data suggesting certain household EMF exposures, especially proximity to transformer stations, may be associated with an increased risk of tumours. This underlines the need for further epidemiological research on EMF safety and health risks.

Machine Enhanced Logic

AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typecase_control

Effect directionmixed

PopulationPatients in a multi-hospital-based case-control study

Sample size316

ExposureELF

Evidence strengthLowConfidence: 78% · Peer reviewed: yes

Main findings

In this multi-hospital case-control study (n=316), odds ratios for tumour risk were below 1 for most household electrical devices. Slightly elevated (but imprecise) odds ratios were reported for computer screen use (OR 1.13; 95% CI 0.43–3.02) and microwave oven use (OR 1.21; 95% CI 0.36–4.04). Living near electricity transformer stations was associated with a statistically significant increased tumour risk (OR 2.16; 95% CI 1.30–3.59), while living close to powerlines showed no elevated risk (OR 0.98).

Outcomes measured

All types of tumours (tumour risk)

Limitations

Pilot study
Case-control design
Exposure characterization details (e.g., measurement, duration/intensity) not provided in the abstract
Outcome grouping is broad ("all types of tumours")

View raw extracted JSON

{
  "study_type": "case_control",
  "exposure": {
    "band": "ELF",
    "source": "household appliances; residential proximity to transformer stations/powerlines",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Patients in a multi-hospital-based case-control study",
  "sample_size": 316,
  "outcomes": [
    "All types of tumours (tumour risk)"
  ],
  "main_findings": "In this multi-hospital case-control study (n=316), odds ratios for tumour risk were below 1 for most household electrical devices. Slightly elevated (but imprecise) odds ratios were reported for computer screen use (OR 1.13; 95% CI 0.43–3.02) and microwave oven use (OR 1.21; 95% CI 0.36–4.04). Living near electricity transformer stations was associated with a statistically significant increased tumour risk (OR 2.16; 95% CI 1.30–3.59), while living close to powerlines showed no elevated risk (OR 0.98).",
  "effect_direction": "mixed",
  "limitations": [
    "Pilot study",
    "Case-control design",
    "Exposure characterization details (e.g., measurement, duration/intensity) not provided in the abstract",
    "Outcome grouping is broad (\"all types of tumours\")"
  ],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "EMF",
    "ELF",
    "household appliances",
    "tumour risk",
    "case-control",
    "powerlines",
    "transformer station"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.15,
      "reason": "Study concerns EMF exposure sources, but primarily residential/household rather than occupational; included with low weight due to general exposure theme."
    }
  ]
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.3390/medsci13020036
PubMed: Not supplied

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