[Biological effects and health risks of electromagnetic fields at levels classified by INCRIP ans admissible among occupationally exposed workers: a study of the Nofer Institute of Occupational Medicine, Lodz].

Abstract

The aim of the study was to evaluate the effect of electromagnetic fields (EMF) on the workers' circulatory system, and to find out to what extent the EMF frequency, short-term (maximum values) and chronic (daily and lifetime doses) exposures influence the type of the observed disorders. The gathered data will help to evaluate whether hygiene standards that limit maximum admissible EMF values (e.g., ICNIRP standards) protect against adverse effects of exposure. The study covered workers employed in transformer and distribution stations, medium wave transmitting stations, radio-service and radio and TV multichannel broadcasting stations. In all the cases, exposure levels were considerably lower than those set as admissible according to the ICNIRP standards. Nevertheless changes in the circulatory system and a significant relationship between blood pressure and neurovegetative regulation disorders and exposure parameters were observed. The frequency of changes in the circulatory system was significantly dependent not only on the maximum EMF value, but also on its dose, which indicates that the hygiene standards for EMF cannot be limited only to short-term exposure maximum values, but they should be supplemented with dose-related standards.

AI evidence extraction

Main findings

Among occupationally exposed workers, exposure levels were reported as considerably lower than ICNIRP admissible limits. Nevertheless, circulatory system changes were observed, and blood pressure and neurovegetative regulation disorders showed significant relationships with exposure parameters; frequency of circulatory changes depended on both maximum field values and dose (daily/lifetime).

Outcomes measured

• Circulatory system changes/disorders
• Blood pressure
• Neurovegetative regulation disorders

Limitations

• Sample size not reported in abstract
• Specific EMF frequencies/metrics not reported in abstract
• Study design details (comparison group, follow-up, confounder control) not described in abstract

Suggested hubs

• occupational-exposure (0.95)
  Study evaluates EMF exposure and circulatory outcomes among occupationally exposed workers in multiple station types.
• who-icnirp (0.75)
  Abstract explicitly discusses exposure levels relative to ICNIRP admissible limits and implications for hygiene standards.

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    "study_type": "cohort",
    "exposure": {
        "band": null,
        "source": "occupational",
        "frequency_mhz": null,
        "sar_wkg": null,
        "duration": "short-term (maximum values) and chronic (daily and lifetime doses) exposures"
    },
    "population": "Workers employed in transformer and distribution stations, medium wave transmitting stations, radio-service and radio and TV multichannel broadcasting stations",
    "sample_size": null,
    "outcomes": [
        "Circulatory system changes/disorders",
        "Blood pressure",
        "Neurovegetative regulation disorders"
    ],
    "main_findings": "Among occupationally exposed workers, exposure levels were reported as considerably lower than ICNIRP admissible limits. Nevertheless, circulatory system changes were observed, and blood pressure and neurovegetative regulation disorders showed significant relationships with exposure parameters; frequency of circulatory changes depended on both maximum field values and dose (daily/lifetime).",
    "effect_direction": "harm",
    "limitations": [
        "Sample size not reported in abstract",
        "Specific EMF frequencies/metrics not reported in abstract",
        "Study design details (comparison group, follow-up, confounder control) not described in abstract"
    ],
    "evidence_strength": "low",
    "confidence": 0.66000000000000003108624468950438313186168670654296875,
    "peer_reviewed_likely": "yes",
    "keywords": [
        "electromagnetic fields",
        "occupational exposure",
        "ICNIRP standards",
        "circulatory system",
        "blood pressure",
        "neurovegetative regulation",
        "dose-response",
        "transformer stations",
        "broadcasting stations"
    ],
    "suggested_hubs": [
        {
            "slug": "occupational-exposure",
            "weight": 0.9499999999999999555910790149937383830547332763671875,
            "reason": "Study evaluates EMF exposure and circulatory outcomes among occupationally exposed workers in multiple station types."
        },
        {
            "slug": "who-icnirp",
            "weight": 0.75,
            "reason": "Abstract explicitly discusses exposure levels relative to ICNIRP admissible limits and implications for hygiene standards."
        }
    ]
}

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