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Studies on the hematologic effects of long-term, low-dose microwave exposure.

Aviation, space, and environmental medicine · 1977 · No effect · Low evidence

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No effectLow evidencePaper 6095

Rats exposed to continuous-wave 12-cm wavelength microwaves at a mean power density of 5 mW/cm2 for 90 days (1 h/day) showed no significant differences in observed hematologic or other biological parameters compared with controls. The authors concluded that p…

Study snapshot

PublicationAviation, space, and environmental medicine · 1977
Study typeanimal
Reported directionNo effect
Evidence ratingLow

Abstract

Hematologic and morphologic investigations were carried out in order to discover changes during and after prolonged exposure to microwave radiation. A 12-cm wavelength CW microwave generator was used as a source of radiation and the mean power density was 5 mW/cm2. The rats were exposed to microwaves for a period of 90 d for 1 h/d. Before, during, and after the irradiation period, hematologic examinations were carried out. The histological examinations of various organs and tissues of irradiated rats were carried out after the experimental period. No significant difference in any of the observed biological parameters was detected in experimental animals in comparison with control. It was concluded that these results indicate that it is unlikely that prolonged microwave exposure to low-intensity (around 5 mW/cm2) will cause marked changes in the peripheral blood counts of the irradiated organism.

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 typeanimal
Effect directionno_effect
PopulationRats
Sample sizeNot supplied
Exposuremicrowave · 2500 MHz · 90 d, 1 h/d
Evidence strengthLowConfidence: 74% · Peer reviewed: yes

Main findings

Rats exposed to continuous-wave 12-cm wavelength microwaves at a mean power density of 5 mW/cm2 for 90 days (1 h/day) showed no significant differences in observed hematologic or other biological parameters compared with controls. The authors concluded that prolonged low-intensity microwave exposure was unlikely to cause marked changes in peripheral blood counts.

Outcomes measured

  • Hematologic examinations (peripheral blood counts)
  • Morphologic/histological examinations of various organs and tissues

Limitations

  • Sample size not reported in the abstract
  • Specific hematologic parameters and statistical details not reported
  • Histology results are described generally without organ-specific findings
View raw extracted JSON
{
  "study_type": "animal",
  "exposure": {
    "band": "microwave",
    "source": "microwave generator",
    "frequency_mhz": 2500,
    "sar_wkg": null,
    "duration": "90 d, 1 h/d"
  },
  "population": "Rats",
  "sample_size": null,
  "outcomes": [
    "Hematologic examinations (peripheral blood counts)",
    "Morphologic/histological examinations of various organs and tissues"
  ],
  "main_findings": "Rats exposed to continuous-wave 12-cm wavelength microwaves at a mean power density of 5 mW/cm2 for 90 days (1 h/day) showed no significant differences in observed hematologic or other biological parameters compared with controls. The authors concluded that prolonged low-intensity microwave exposure was unlikely to cause marked changes in peripheral blood counts.",
  "effect_direction": "no_effect",
  "limitations": [
    "Sample size not reported in the abstract",
    "Specific hematologic parameters and statistical details not reported",
    "Histology results are described generally without organ-specific findings"
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "microwave radiation",
    "continuous wave",
    "12-cm wavelength",
    "power density",
    "5 mW/cm2",
    "rats",
    "hematology",
    "peripheral blood counts",
    "histology",
    "long-term exposure"
  ],
  "suggested_hubs": []
}
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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: Not supplied
PubMed: 869838

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