Radiofrequency Fields and Calcium Movements Into and Out of Cells

Radiation research · 2020 · No effect · Low evidence

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No effectLow evidencePaper 1571

Study snapshot

PublicationRadiation research · 2020

Study typereview

Reported directionNo effect

Evidence ratingLow

Abstract

Radiofrequency Fields and Calcium Movements Into and Out of Cells Andrew Wood, Ken Karipidis. Radiofrequency Fields and Calcium Movements Into and Out of Cells. Radiat Res. 2020 Nov 18. doi: 10.1667/RADE-20-00101.1. Abstract The recent rollout of 5G telecommunications systems has spawned a renewed call to re-examine the possibility of so-called "non-thermal" harmful effects of radiofrequency (RF) radiation. The possibility of calcium being affected by low-level RF has been the subject of research for nearly 50 years and there have been recent suggestions that voltage-gated calcium channels (VGCCs) are "extraordinarily sensitive" to ambient RF fields. This article examines the feasibility of particularly modulated RF coupling to gating mechanisms in VGCCs and also reviews studies from the literature from the last 50 years for consistency of outcome. We conclude that the currents induced by fields at the ICNIRP guideline limits are many orders of magnitude below those needed to affect gating, and there would need to be a biological mechanism for detection and rectification of the extremely-low-frequency (ELF) modulations, which has not been demonstrated. Overall, experimental studies have not validated that RF affects Ca2+ transport into or out of cells. pubmed.ncbi.nlm.nih.gov

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 directionno_effect

PopulationNot supplied

Sample sizeNot supplied

ExposureRF

Evidence strengthLowConfidence: 74% · Peer reviewed: yes

Main findings

The article examines feasibility of modulated RF coupling to VGCC gating mechanisms and reviews ~50 years of literature on calcium-related outcomes. It concludes induced currents at ICNIRP guideline limits are far below those needed to affect gating, a required biological detection/rectification mechanism for ELF modulations has not been demonstrated, and overall experimental studies have not validated that RF affects Ca2+ transport into or out of cells.

Outcomes measured

Ca2+ transport into or out of cells
Voltage-gated calcium channel (VGCC) gating mechanisms
Induced currents at ICNIRP guideline limits
Non-thermal effects (as framed in relation to calcium/VGCCs)

Limitations

No specific frequencies, exposure metrics (e.g., SAR), or study selection methods are described in the abstract.
Details on included studies, populations/cell types, and quantitative synthesis are not provided in the abstract.

View raw extracted JSON

{
  "study_type": "review",
  "exposure": {
    "band": "RF",
    "source": "5G telecommunications systems",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "Ca2+ transport into or out of cells",
    "Voltage-gated calcium channel (VGCC) gating mechanisms",
    "Induced currents at ICNIRP guideline limits",
    "Non-thermal effects (as framed in relation to calcium/VGCCs)"
  ],
  "main_findings": "The article examines feasibility of modulated RF coupling to VGCC gating mechanisms and reviews ~50 years of literature on calcium-related outcomes. It concludes induced currents at ICNIRP guideline limits are far below those needed to affect gating, a required biological detection/rectification mechanism for ELF modulations has not been demonstrated, and overall experimental studies have not validated that RF affects Ca2+ transport into or out of cells.",
  "effect_direction": "no_effect",
  "limitations": [
    "No specific frequencies, exposure metrics (e.g., SAR), or study selection methods are described in the abstract.",
    "Details on included studies, populations/cell types, and quantitative synthesis are not provided in the abstract."
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "radiofrequency",
    "RF",
    "5G",
    "non-thermal effects",
    "calcium",
    "Ca2+ transport",
    "voltage-gated calcium channels",
    "VGCC",
    "ICNIRP",
    "ELF modulation"
  ],
  "suggested_hubs": [
    {
      "slug": "5g-policy",
      "weight": 0.62,
      "reason": "Discusses 5G rollout and re-examination of non-thermal RF effects."
    },
    {
      "slug": "who-icnirp",
      "weight": 0.7,
      "reason": "Explicitly evaluates induced currents at ICNIRP guideline limits."
    }
  ]
}

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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: 10.1667/rade-20-00101.1
PubMed: 33206197

Read the original paper →

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