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Radio Frequency

Assessment of radiofrequency power density distribution around GSM and broadcast antenna masts in Lagos City

No Effects Found

Ibitoye ZA, Aweda AM. · 2011

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Cell tower radiation in Lagos measured 20-50 times below safety limits, but these limits don't account for non-thermal biological effects.

Plain English Summary

Summary written for general audiences

Nigerian researchers measured radiofrequency radiation levels around cell phone towers and broadcast antennas in Lagos City to assess public safety. They found power density levels ranging from 0.219 to 302.4 milliwatts per square meter, which were 20 to 50 times below international safety limits set by ICNIRP and IEEE. The study concluded that people staying at least 6 meters away from these antennas face minimal health risks from RF exposure.

Why This Matters

This field measurement study provides valuable real-world data on RF exposure levels around telecommunications infrastructure in urban environments. While the measured levels were well below current safety standards, it's important to understand that these standards are based primarily on preventing thermal effects from heating tissue, not the non-thermal biological effects that hundreds of peer-reviewed studies have documented at much lower exposure levels. The study's conclusion that exposure poses minimal health risks relies entirely on compliance with regulatory limits that many independent scientists argue are inadequate. What this means for you is that while acute thermal damage is unlikely at these distances, the research doesn't address potential long-term health effects from chronic low-level exposure that occurs when living or working near cell towers.

Exposure Details

Power Density
0.0000219, 0.03024 mW/cm²
Source/Device
50 MHz and 3.5 GHz

Exposure Context

This study used 0.0000219, 0.03024 mW/cm² for radio frequency:

Building Biology guidelines are practitioner-based limits from real-world assessments. BioInitiative Report recommendations are based on peer-reviewed science. Check Your Exposure to compare your own measurements.

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 0.0000219, 0.03024 mW/cm²Extreme Concern - 1,000 µW/m²FCC Limit - 10M µW/m²Effects observed in the Severe Concern range (Building Biology)FCC limit is 45,662 times higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 50 MHz - 3.50 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 50 MHz - 3.50 GHzPower lines50/60 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Study Details

The purpose of this study is to determine power density around different telecommunications antenna base stations and compare the measured values with the international recommended exposure limits in order to assess the safety of the members of the public.

A radiofrequency meter, Electrosmog from LESSEMF USA was used for the measurement. It is a highly se...

Power densities obtained varied between 0.219 and 302.40 mW.m(-2) from the studied base stations. Co...

Power densities of the RF radiation from telecommunication transmitting/receiving antennae were far below international standard limits. The measured values are not likely capable of inducing significant hazardous health effects among the people that are at least 6 m away from the antennae.

Cite This Study
Ibitoye ZA, Aweda AM. (2011). Assessment of radiofrequency power density distribution around GSM and broadcast antenna masts in Lagos City Nigeria.Nig Q J Hosp Med. 21(1):35-40, 2011.
Show BibTeX
@article{za_2011_assessment_of_radiofrequency_power_3097,
  author = {Ibitoye ZA and Aweda AM.},
  title = {Assessment of radiofrequency power density distribution around GSM and broadcast antenna masts in Lagos City},
  year = {2011},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/21913539/},
}
PubMed: 21913539

Cited By (9 papers)

Quick Questions About This Study

Nigerian researchers found radiofrequency power density levels ranging from 0.219 to 302.4 milliwatts per square meter around GSM and broadcast antennas in Lagos. These measurements were 20 to 50 times below international safety limits established by ICNIRP and IEEE standards.
The Lagos study concluded that people staying at least 6 meters away from telecommunication antennas face minimal health risks from RF exposure. At this distance, measured radiation levels were well below international safety standards and unlikely to cause health effects.
Research from Lagos City found that 50 MHz and 3.5 GHz antenna emissions posed no significant health risks. Power density measurements were far below ICNIRP safety limits of 12,000 mW/m² and IEEE limits of 5,700 mW/m² for these frequencies.
The 2011 Lagos study found cell tower radiation levels were extremely low compared to international standards. Maximum measured power density of 302.4 mW/m² was still 20-40 times below ICNIRP and IEEE safety thresholds, indicating minimal health risk.
Based on measurements in Lagos, Nigeria's largest city, living near broadcast towers appears safe. Researchers found radiofrequency radiation levels around telecommunication antennas were far below international safety limits and unlikely to cause significant health effects.