Adverse health effects of occupational exposure to radiofrequency radiation in airport surveillance radar operators

Abstract

INTRODUCTION: Radar workers are exposed to pulsed high frequency electromagnetic fields. In this study, health effects of these radiations in personnel who routinely work with radar systems are investigated. MATERIALS AND METHODS: The 28-item General Health Questionnaire was used as a self-administered tool for assessment of general mental health and mental distress. One hundred workers occupationally exposed to radar radiations (14-18 GHz) participated in the study. Visual reaction time was recorded with a simple blind computer-assisted-visual reaction time test. To assess the short-term memory, Wechsler Memory Scale-III test was performed. RESULTS: Twenty to 39% of the radar workers reported different problems such as needing a good tonic, feeling run down and out of sorts, headache, tightness or pressure in the head, insomnia, getting edgy and bad-tempered. Furthermore, 47% of the radar workers reported feeling under strain. In response to this question that if they have been able to enjoy their normal day-to-day activities, 31% responded less than usual. It was also shown that work experience had significant relationships with reaction time and short-term memory indices i.e., forward digit span, reverse digit span, word recognition and paired words. CONCLUSION: To the best of our knowledge, this is the first study to show that occupational exposure to radar microwave radiation leads to changes in somatic symptoms, anxiety and insomnia, social dysfunction, and severe depression. Altogether these results indicate that occupational exposure to radar microwave radiations may be linked to some adverse health effects.

AI evidence extraction

Main findings

Among 100 radar workers exposed to 14–18 GHz, 20–39% reported symptoms such as headache, insomnia, feeling run down, and irritability; 47% reported feeling under strain and 31% reported enjoying day-to-day activities less than usual. Work experience was reported to have significant relationships with reaction time and short-term memory indices (forward/reverse digit span, word recognition, paired words).

Outcomes measured

• General mental health/mental distress (General Health Questionnaire-28)
• Somatic symptoms
• Anxiety and insomnia
• Social dysfunction
• Severe depression
• Headache
• Insomnia
• Visual reaction time
• Short-term memory (Wechsler Memory Scale-III; digit span, word recognition, paired words)

Limitations

• No unexposed/control group described in the abstract
• Cross-sectional design limits causal inference
• Self-reported symptoms via questionnaire
• Exposure characterization limited to frequency range; no quantitative exposure metrics reported (e.g., power density/SAR)

Suggested hubs

• occupational-exposure (0.95)
  Study evaluates health outcomes in workers occupationally exposed to radar RF/microwave radiation.

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    "study_type": "cross_sectional",
    "exposure": {
        "band": "microwave",
        "source": "occupational (airport surveillance radar)",
        "frequency_mhz": null,
        "sar_wkg": null,
        "duration": null
    },
    "population": "Airport surveillance radar operators/workers",
    "sample_size": 100,
    "outcomes": [
        "General mental health/mental distress (General Health Questionnaire-28)",
        "Somatic symptoms",
        "Anxiety and insomnia",
        "Social dysfunction",
        "Severe depression",
        "Headache",
        "Insomnia",
        "Visual reaction time",
        "Short-term memory (Wechsler Memory Scale-III; digit span, word recognition, paired words)"
    ],
    "main_findings": "Among 100 radar workers exposed to 14–18 GHz, 20–39% reported symptoms such as headache, insomnia, feeling run down, and irritability; 47% reported feeling under strain and 31% reported enjoying day-to-day activities less than usual. Work experience was reported to have significant relationships with reaction time and short-term memory indices (forward/reverse digit span, word recognition, paired words).",
    "effect_direction": "harm",
    "limitations": [
        "No unexposed/control group described in the abstract",
        "Cross-sectional design limits causal inference",
        "Self-reported symptoms via questionnaire",
        "Exposure characterization limited to frequency range; no quantitative exposure metrics reported (e.g., power density/SAR)"
    ],
    "evidence_strength": "low",
    "confidence": 0.7399999999999999911182158029987476766109466552734375,
    "peer_reviewed_likely": "yes",
    "keywords": [
        "radar",
        "airport surveillance radar",
        "occupational exposure",
        "radiofrequency radiation",
        "microwave radiation",
        "14-18 GHz",
        "GHQ-28",
        "reaction time",
        "short-term memory",
        "insomnia",
        "headache",
        "depression"
    ],
    "suggested_hubs": [
        {
            "slug": "occupational-exposure",
            "weight": 0.9499999999999999555910790149937383830547332763671875,
            "reason": "Study evaluates health outcomes in workers occupationally exposed to radar RF/microwave radiation."
        }
    ]
}

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