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

PAPER pubmed Aviation, space, and environmental medicine 1977 Animal study Effect: no_effect Evidence: Low

Read original paper → PMID: 869838 Evidence Lab

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.

AI evidence extraction

At a glance

Study type

Animal study

Effect direction

no_effect

Population

Rats

Sample size

—

Exposure

microwave microwave generator · 2500 MHz · 90 d, 1 h/d

Evidence strength

Low

Confidence: 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": 0.7399999999999999911182158029987476766109466552734375,
    "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/metadata and may be incomplete or incorrect. This content is for informational purposes only and is not medical advice.

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