RF Safe

Male reproductive health under threat: Short term exposure to radiofrequency radiations emitted by common mobile jammers.

Journal of human reproductive sciences · 2013 · Harm · Low evidence

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HarmLow evidencePaper 4572

Sperm motility in samples exposed to radiofrequency radiation from a mobile jammer for 2 or 4 hours was significantly lower than in sham-exposed samples.

Study snapshot

PublicationJournal of human reproductive sciences · 2013
Study typein_vitro
Reported directionHarm
Evidence ratingLow

Abstract

BACKGROUND: Modern life prompted man to increasingly generate, transmit and use electricity that leads to exposure to different levels of electromagnetic fields (EMFs). Substantial evidence indicates that exposure to common sources of EMF such as mobile phones, laptops or wireless internet-connected laptops decreases human semen quality. In some countries, mobile jammers are occasionally used in offices, shrines, conference rooms and cinemas to block the signal. AIMS: To the best of our knowledge, this is the first study to investigate the effect of short term exposure of human sperm samples to radiofrequency (RF) radiations emitted by common mobile jammers. SUBJECTS AND METHODS: Fresh semen samples were collected by masturbation from 30 healthy donors who had referred to Infertility Treatment Center at the Mother and Child Hospital with their wives. Female problem was diagnosed as the reason for infertility in these couples. STATISTICAL ANALYSIS: T-test and analysis of variance were used to show statistical significance. RESULTS: The motility of sperm samples exposed to jammer RF radiation for 2 or 4 h were significantly lower than those of sham-exposed samples. These findings lead us to the conclusion that mobile jammers may significantly decrease sperm motility and the couples' chances of conception. CONCLUSION: Based on these results, it can be suggested that in countries that have not banned mobile jammer use, legislations should be urgently passed to restrict the use of these signal blocking devices in public or private places.

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 typein_vitro
Effect directionharm
PopulationHuman sperm samples from 30 healthy semen donors
Sample size30
ExposureRF · 2 or 4 h
Evidence strengthLowConfidence: 78% · Peer reviewed: yes

Main findings

Sperm motility in samples exposed to radiofrequency radiation from a mobile jammer for 2 or 4 hours was significantly lower than in sham-exposed samples.

Outcomes measured

  • Sperm motility

Limitations

  • Exposure characteristics (e.g., frequency, power/SAR) not reported in the abstract
  • Short-term exposure only (2–4 hours)
  • In vitro study using sperm samples; findings may not directly translate to in vivo male fertility outcomes
View raw extracted JSON
{
  "study_type": "in_vitro",
  "exposure": {
    "band": "RF",
    "source": "mobile jammer",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "2 or 4 h"
  },
  "population": "Human sperm samples from 30 healthy semen donors",
  "sample_size": 30,
  "outcomes": [
    "Sperm motility"
  ],
  "main_findings": "Sperm motility in samples exposed to radiofrequency radiation from a mobile jammer for 2 or 4 hours was significantly lower than in sham-exposed samples.",
  "effect_direction": "harm",
  "limitations": [
    "Exposure characteristics (e.g., frequency, power/SAR) not reported in the abstract",
    "Short-term exposure only (2–4 hours)",
    "In vitro study using sperm samples; findings may not directly translate to in vivo male fertility outcomes"
  ],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "radiofrequency",
    "RF radiation",
    "mobile jammer",
    "signal blocking devices",
    "semen",
    "sperm motility",
    "male reproductive health",
    "in vitro",
    "sham-exposed"
  ],
  "suggested_hubs": [
    {
      "slug": "smart-meters",
      "weight": 0,
      "reason": null
    }
  ]
}
AI can be wrong. Always verify against the paper.

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: 10.4103/0974-1208.117178
PubMed: 24082653

Read the original paper →

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