Effects of low level microwave radiation on the digestive transit of the rat.

Abstract

The effects of low level microwave radiation (3-4 mW/cm2--2450 MHz) during 4 and 8 h on the WISTAR Rat digestive transit has been studied. The results showed no effect after 4 h radiation and an acceleration of the digestive transit after 8 h of radiation (p less than .001). The acceleration of the digestive transit was still observed after 24 h (p less than .001). 60-90 s after radiation time the rectal temperature of radiated animals did not differ from the controls.

AI evidence extraction

Main findings

Low-level microwave radiation (3–4 mW/cm2 at 2450 MHz) showed no effect on digestive transit after 4 hours, but accelerated digestive transit after 8 hours (p<.001), with acceleration still observed 24 hours later (p<.001). Rectal temperature measured 60–90 seconds after radiation did not differ from controls.

Outcomes measured

• digestive transit
• rectal temperature

Limitations

• Sample size not reported in the abstract.
• Study design details (randomization, blinding, sham exposure) not described in the abstract.
• Exposure characterization limited to power density and frequency; SAR not reported.
• Temperature assessment timing limited (60–90 seconds post-exposure only).

{
    "study_type": "animal",
    "exposure": {
        "band": "microwave",
        "source": null,
        "frequency_mhz": 2450,
        "sar_wkg": null,
        "duration": "4 h and 8 h"
    },
    "population": "Wistar rats",
    "sample_size": null,
    "outcomes": [
        "digestive transit",
        "rectal temperature"
    ],
    "main_findings": "Low-level microwave radiation (3–4 mW/cm2 at 2450 MHz) showed no effect on digestive transit after 4 hours, but accelerated digestive transit after 8 hours (p<.001), with acceleration still observed 24 hours later (p<.001). Rectal temperature measured 60–90 seconds after radiation did not differ from controls.",
    "effect_direction": "mixed",
    "limitations": [
        "Sample size not reported in the abstract.",
        "Study design details (randomization, blinding, sham exposure) not described in the abstract.",
        "Exposure characterization limited to power density and frequency; SAR not reported.",
        "Temperature assessment timing limited (60–90 seconds post-exposure only)."
    ],
    "evidence_strength": "low",
    "confidence": 0.7800000000000000266453525910037569701671600341796875,
    "peer_reviewed_likely": "yes",
    "keywords": [
        "microwave radiation",
        "2450 MHz",
        "3-4 mW/cm2",
        "Wistar rat",
        "digestive transit",
        "rectal temperature"
    ],
    "suggested_hubs": []
}

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