Whole body exposure of rats to microwaves emitted from a cell phone does not affect the testes.

Bioelectromagnetics · 2003 · No effect · Low evidence

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No effectLow evidencePaper 6400

Study snapshot

PublicationBioelectromagnetics · 2003

Study typeanimal

Reported directionNo effect

Evidence ratingLow

Abstract

The objective of this study was to investigate the effects of radiofrequency radiation emitted from cellular phones on the lipid composition, malondialdehyde concentration, p53 immune reactivity, sperm count, morphology, histological structure of testes, and on rectal temperature of rats exposed to microwave radiation emitted from cellular phones. Sixteen Spraque-Dawley rats were separated into two groups of eight, sham exposed (control) and experimental. The rats were confined in plexiglas cages specially designed for this study, and cellular phones were placed 0.5 cm under the cages. For the experimental group, cellular phones were activated 20 min per day (7 days a week) for 1 month. For the control group, the cellular phones were placed beneath the cages for 20 min a day, but the phones were turned off. Rectal temperatures were measured weekly. For 250 mW radiated power, the whole body average SAR (rms) is 0.52 W/kg and 1 g averaged peak SAR (rms) is 3.13 W/kg. The Mann-Whitney U-test was used for statistical comparisons of groups. No statistically significant alteration in any of the endpoints was noted. This study found no evidence suggesting an adverse effect of cell phone exposure on measures of testicular function or structure.

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

PopulationMale Sprague-Dawley rats

Sample size16

ExposureRF · 0.52 W/kg · 20 min/day, 7 days/week, for 1 month

Evidence strengthLowConfidence: 86% · Peer reviewed: yes

Main findings

In 16 rats (8 exposed, 8 sham), whole-body exposure to microwaves emitted from activated cellular phones (20 min/day for 1 month; whole-body average SAR 0.52 W/kg; 1 g peak SAR 3.13 W/kg) produced no statistically significant changes in any measured endpoint, including sperm measures, testicular histology, oxidative stress marker (malondialdehyde), p53 immunoreactivity, lipid composition, or rectal temperature.

Outcomes measured

testes lipid composition
malondialdehyde concentration
p53 immune reactivity
sperm count
sperm morphology
histological structure of testes
rectal temperature

Limitations

Small sample size (n=16; 8 per group).
Exposure frequency (MHz) not reported in the abstract.
Exposure duration limited to 1 month.

View raw extracted JSON

{
  "study_type": "animal",
  "exposure": {
    "band": "RF",
    "source": "mobile phone",
    "frequency_mhz": null,
    "sar_wkg": 0.52,
    "duration": "20 min/day, 7 days/week, for 1 month"
  },
  "population": "Male Sprague-Dawley rats",
  "sample_size": 16,
  "outcomes": [
    "testes lipid composition",
    "malondialdehyde concentration",
    "p53 immune reactivity",
    "sperm count",
    "sperm morphology",
    "histological structure of testes",
    "rectal temperature"
  ],
  "main_findings": "In 16 rats (8 exposed, 8 sham), whole-body exposure to microwaves emitted from activated cellular phones (20 min/day for 1 month; whole-body average SAR 0.52 W/kg; 1 g peak SAR 3.13 W/kg) produced no statistically significant changes in any measured endpoint, including sperm measures, testicular histology, oxidative stress marker (malondialdehyde), p53 immunoreactivity, lipid composition, or rectal temperature.",
  "effect_direction": "no_effect",
  "limitations": [
    "Small sample size (n=16; 8 per group).",
    "Exposure frequency (MHz) not reported in the abstract.",
    "Exposure duration limited to 1 month."
  ],
  "evidence_strength": "low",
  "confidence": 0.86,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "radiofrequency radiation",
    "microwaves",
    "cellular phone",
    "rats",
    "testes",
    "sperm count",
    "sperm morphology",
    "malondialdehyde",
    "p53",
    "SAR",
    "rectal temperature"
  ],
  "suggested_hubs": [
    {
      "slug": "mobile-phones",
      "weight": 0.9,
      "reason": "Study evaluates biological effects of RF/microwave exposure emitted from cellular phones."
    }
  ]
}

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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: 10.1002/bem.10083
PubMed: 12669301

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