30 Hz, Could It Be Part of a Window Frequency for Cellular Response? (Review)

{
  "publication_year": 2021,
  "study_type": "review",
  "exposure": {
    "band": "ELF",
    "source": null,
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Tumoral and non-tumoral cells (including glioblastoma cells)",
  "sample_size": null,
  "outcomes": [
    "Cell viability",
    "Cellular response (frequency dependence)"
  ],
  "main_findings": "The authors report that across their studies using combinations of extremely low frequencies, exposure times, and field intensities, cell viability in glioblastoma cells was frequency dependent. They suggest that 30 Hz (and nearby frequencies) could represent a \"window frequency\" influencing cellular responses in tumoral and non-tumoral cells.",
  "effect_direction": "mixed",
  "limitations": [
    "Conflicting results in the broader literature are noted by the authors.",
    "Specific exposure parameters (field intensity, timing) are not detailed in the abstract.",
    "The abstract does not describe study selection methods or quality assessment typical of systematic reviews."
  ],
  "evidence_strength": "low",
  "confidence": 0.66,
  "peer_reviewed_likely": "yes",
  "stance": "concern",
  "stance_confidence": 0.62,
  "summary": "This review discusses potential cellular effects of non-ionizing electromagnetic fields, noting ongoing scientific debate and conflicting findings in the literature. The authors summarize their own experimental work using extremely low frequencies and report frequency-dependent changes in glioblastoma cell viability. They propose that 30 Hz (and nearby frequencies) may act as a window frequency affecting cellular responses in tumoral and non-tumoral cells.",
  "key_points": [
    "The paper frames non-ionizing electromagnetic fields as a debated potential risk factor for brain tumors.",
    "The authors state they reviewed more than 50 articles and highlight conflicting results in the field.",
    "They report results from their own studies varying extremely low frequencies, exposure times, and field intensities in cell models.",
    "Glioblastoma cell viability is reported to be frequency dependent in their experiments.",
    "The authors suggest 30 Hz (and nearby frequencies) could be a window frequency influencing cellular responses.",
    "Details on exposure levels and experimental conditions are not provided in the abstract."
  ],
  "categories": [
    "Extremely Low Frequency (ELF)",
    "In Vitro",
    "Cancer/Biology",
    "Mechanisms"
  ],
  "tags": [
    "30 Hz",
    "Window Frequency",
    "Extremely Low Frequency Fields",
    "Non-Ionizing Radiation",
    "Cell Viability",
    "Glioblastoma Cells",
    "Tumoral Cells",
    "In Vitro Study",
    "Frequency Dependence"
  ],
  "keywords": [
    "30 Hz",
    "window frequency",
    "extremely low frequency",
    "non-ionizing electromagnetic fields",
    "cell viability",
    "glioblastoma"
  ],
  "suggested_hubs": [],
  "social": {
    "tweet": "Review: authors report frequency-dependent effects of extremely low-frequency EMF on glioblastoma cell viability and suggest ~30 Hz may act as a “window frequency” for cellular responses. (Int J Mol Sci, 2021)",
    "facebook": "A 2021 review discusses debated health effects of non-ionizing EMF and summarizes the authors’ cell studies reporting frequency-dependent changes in glioblastoma viability, proposing ~30 Hz as a possible “window frequency.”",
    "linkedin": "In a 2021 Int J Mol Sci review, the authors summarize literature and their own in vitro studies, reporting frequency-dependent effects in glioblastoma cell viability and proposing ~30 Hz as a potential window frequency for cellular response."
  }
}