[Long-term exposure to low intensity microwave radiation affects male reproductivity].

{
  "study_type": "cohort",
  "exposure": {
    "band": "microwave",
    "source": "occupational (radar operators)",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "long-term"
  },
  "population": "Married male radar operators and married male controls unexposed to microwave radiation",
  "sample_size": 437,
  "outcomes": [
    "sexual dysfunction rate",
    "natural pregnancy rate (within 1 year of marriage; after 1 year of marriage)"
  ],
  "main_findings": "Sexual dysfunction was reported more often in radar operators (43.6%) than controls (24.4%) (P < 0.01). Natural pregnancy rates differed between groups: in the radar group 53.6% occurred within 1 year of marriage and 46.4% after 1 year, versus 81.1% and 18.9% in controls (P < 0.01). The authors conclude long-term low-intensity microwave exposure increased sexual dysfunction and decreased natural pregnancy rate.",
  "effect_direction": "harm",
  "limitations": [
    "Exposure frequency and quantitative exposure metrics beyond 'intensity in different working areas' not reported in abstract",
    "Outcomes appear questionnaire-based; objective clinical measures not described",
    "Potential confounding factors and adjustment methods not described",
    "Study design details (e.g., matching, follow-up period) not described"
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "microwave radiation",
    "radar operators",
    "occupational exposure",
    "male reproductivity",
    "sexual dysfunction",
    "pregnancy rate"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.9,
      "reason": "Study compares radar operators with unexposed controls for reproductive outcomes under occupational microwave exposure."
    }
  ]
}