Physics and biology of mobile telephony

Lancet · 2000 · Mixed · Insufficient evidence

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MixedInsufficient evidencePaper 2430

Study snapshot

PublicationLancet · 2000

Study typereview

Reported directionMixed

Evidence ratingInsufficient

Abstract

Although safety guidelines--to which mobile telephones and their base-stations conform--do protect against excessive microwave heating, there is evidence that the low intensity, pulsed radiation currently used can exert subtle non-thermal influences. If these influences entail adverse health consequences, current guidelines would be inadequate. This review will focus on this possibility. The radiation used is indeed of very low intensity, but an oscillatory similitude between this pulsed microwave radiation and certain electrochemical activities of the living human being should prompt concern. However, being so inherently dependent on aliveness, non-thermal effects cannot be expected to be as robust as thermal ones, as is indeed found; nor can everyone be expected to be affected in the same way by exposure to the same radiation. Notwithstanding uncertainty about whether the non-thermal influences reported do adversely affect health, there are consistencies between some of these effects and the neurological problems reported by some mobile-telephone users and people exposed longterm to base-station radiation. These should be pointers for future research.

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 typereview

Effect directionmixed

Populationliving human being; mobile-telephone users; people exposed longterm to base-station radiation

Sample sizeNot supplied

Exposuremicrowave · longterm (base-station radiation; as reported)

Evidence strengthInsufficientConfidence: 74% · Peer reviewed: yes

Main findings

The review argues that while existing safety guidelines protect against excessive microwave heating, there is evidence that low-intensity pulsed radiation used in mobile telephony can exert subtle non-thermal influences. It notes uncertainty about whether these non-thermal influences adversely affect health, but reports consistencies between some described effects and neurological problems reported by some mobile-phone users and people with long-term base-station exposure.

Outcomes measured

non-thermal biological influences/effects
adverse health consequences (possibility)
neurological problems (reported by some users/exposed individuals)

Limitations

Uncertainty acknowledged about whether reported non-thermal influences cause adverse health effects
Non-thermal effects described as less robust than thermal effects and potentially variable between individuals
No quantitative exposure metrics (eg, frequency, SAR) provided in the abstract
No study selection methods or sample sizes described in the abstract

View raw extracted JSON

{
  "study_type": "review",
  "exposure": {
    "band": "microwave",
    "source": "mobile phone and base station",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "longterm (base-station radiation; as reported)"
  },
  "population": "living human being; mobile-telephone users; people exposed longterm to base-station radiation",
  "sample_size": null,
  "outcomes": [
    "non-thermal biological influences/effects",
    "adverse health consequences (possibility)",
    "neurological problems (reported by some users/exposed individuals)"
  ],
  "main_findings": "The review argues that while existing safety guidelines protect against excessive microwave heating, there is evidence that low-intensity pulsed radiation used in mobile telephony can exert subtle non-thermal influences. It notes uncertainty about whether these non-thermal influences adversely affect health, but reports consistencies between some described effects and neurological problems reported by some mobile-phone users and people with long-term base-station exposure.",
  "effect_direction": "mixed",
  "limitations": [
    "Uncertainty acknowledged about whether reported non-thermal influences cause adverse health effects",
    "Non-thermal effects described as less robust than thermal effects and potentially variable between individuals",
    "No quantitative exposure metrics (eg, frequency, SAR) provided in the abstract",
    "No study selection methods or sample sizes described in the abstract"
  ],
  "evidence_strength": "insufficient",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "mobile telephony",
    "mobile phones",
    "base stations",
    "microwave",
    "pulsed radiation",
    "non-thermal effects",
    "safety guidelines",
    "neurological problems"
  ],
  "suggested_hubs": [
    {
      "slug": "who-icnirp",
      "weight": 0.62,
      "reason": "Discusses adequacy of safety guidelines for mobile phones/base stations and non-thermal effects beyond heating."
    }
  ]
}

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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: 10.1016/s0140-6736(00)03243-8
PubMed: 11117927

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