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

{
  "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": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "microwave radiation",
    "2450 MHz",
    "3-4 mW/cm2",
    "Wistar rat",
    "digestive transit",
    "rectal temperature"
  ],
  "suggested_hubs": []
}