Effect of cell phone exposure on physiologic and hematologic parameters of male medical students of Bijapur (Karnataka) with reference to serum lipid profile

J Basic Clin Physiol Pharmacol · 2010 · Mixed · Low evidence

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MixedLow evidencePaper 6779

Study snapshot

PublicationJ Basic Clin Physiol Pharmacol · 2010

Study typecross_sectional

Reported directionMixed

Evidence ratingLow

Abstract

The public awareness about cell phone safety increased greatly in the last few years as various reports of potential adverse health effects on humans exposed to radiations emitted from cellular phones were published. The aim of the study was to assess the effect of long term cell phone exposure on physiological and hematological parameters along with its impact on serum lipid profiles and a single call effect on heart rate, blood pressure and SpO2(%) of healthy male medical students. The students were divided into two groups, group I (n=22, age 20.63 +/- 1.17 yrs) comprising first year medical students who were never exposed to cell phones at the time of this study and group II (n=35, age 22.00 +/- 1.56 yrs) consists of final year (fourth year) male medical students who were using cell phone for more than four years before this study. The results showed no significant differences the groups in basal heart rate, systolic blood pressure, SpO2(%), or various hematologic parameters. Acute exposure (single call of cell phone with 900 MHz for 1 minute) in both groups showed a significant increase in peak heart rate in group II as compared with group I and a significant decrease in peak SpO2 (%) in group I as compared with group II. Serum total cholesterol, VLDL-cholesterol, and triglycerides concentration were significantly higher in group II (long term cell phone exposed) than in group I, suggesting a mild alteration of lipid profile among group II subjects.

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 typecross_sectional

Effect directionmixed

PopulationHealthy male medical students in Bijapur (Karnataka), India

Sample size57

ExposureRF · 900 MHz · Long-term use >4 years (group II) vs never exposed (group I); acute exposure: single 1-minute call

Evidence strengthLowConfidence: 78% · Peer reviewed: yes

Main findings

No significant differences between long-term exposed and never-exposed groups were reported for basal heart rate, systolic blood pressure, SpO2(%), or various hematologic parameters. During an acute 1-minute 900 MHz call, peak heart rate increased significantly in the long-term exposed group compared with the never-exposed group, and peak SpO2(%) decreased significantly in the never-exposed group compared with the long-term exposed group. Serum total cholesterol, VLDL-cholesterol, and triglycerides were significantly higher in the long-term exposed group, described as a mild alteration of lipid profile.

Outcomes measured

Basal heart rate
Systolic blood pressure
SpO2(%)
Hematologic parameters (various; not specified)
Peak heart rate during/after a single call
Peak SpO2(%) during/after a single call
Serum total cholesterol
VLDL-cholesterol
Triglycerides

Limitations

Non-randomized group assignment (comparison of first-year vs fourth-year students)
Exposure characterization for long-term use not quantified beyond '>4 years'
Only male medical students; limited generalizability
Details of hematologic parameters and measurement methods not provided in abstract

View raw extracted JSON

{
  "study_type": "cross_sectional",
  "exposure": {
    "band": "RF",
    "source": "mobile phone",
    "frequency_mhz": 900,
    "sar_wkg": null,
    "duration": "Long-term use >4 years (group II) vs never exposed (group I); acute exposure: single 1-minute call"
  },
  "population": "Healthy male medical students in Bijapur (Karnataka), India",
  "sample_size": 57,
  "outcomes": [
    "Basal heart rate",
    "Systolic blood pressure",
    "SpO2(%)",
    "Hematologic parameters (various; not specified)",
    "Peak heart rate during/after a single call",
    "Peak SpO2(%) during/after a single call",
    "Serum total cholesterol",
    "VLDL-cholesterol",
    "Triglycerides"
  ],
  "main_findings": "No significant differences between long-term exposed and never-exposed groups were reported for basal heart rate, systolic blood pressure, SpO2(%), or various hematologic parameters. During an acute 1-minute 900 MHz call, peak heart rate increased significantly in the long-term exposed group compared with the never-exposed group, and peak SpO2(%) decreased significantly in the never-exposed group compared with the long-term exposed group. Serum total cholesterol, VLDL-cholesterol, and triglycerides were significantly higher in the long-term exposed group, described as a mild alteration of lipid profile.",
  "effect_direction": "mixed",
  "limitations": [
    "Non-randomized group assignment (comparison of first-year vs fourth-year students)",
    "Exposure characterization for long-term use not quantified beyond '>4 years'",
    "Only male medical students; limited generalizability",
    "Details of hematologic parameters and measurement methods not provided in abstract"
  ],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "cell phone",
    "mobile phone",
    "RF exposure",
    "900 MHz",
    "heart rate",
    "blood pressure",
    "SpO2",
    "hematology",
    "lipid profile",
    "cholesterol",
    "VLDL",
    "triglycerides",
    "medical students"
  ],
  "suggested_hubs": [
    {
      "slug": "mobile-phones",
      "weight": 0.9,
      "reason": "Study evaluates physiological, hematologic, and lipid outcomes in relation to mobile phone use and an acute 900 MHz call."
    }
  ]
}

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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: 10.1515/jbcpp.2010.21.2.201
PubMed: 20853601

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