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Relationship between field strength and abnormal development in chick embryos exposed to 50 Hz magnetic fields

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Authors not listed · 1987

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Exposure of chick embryos to 50 Hz magnetic fields during the first two days of development increased abnormal development at field strengths of 1 A/m and above, with a threshold between 0.9 and 1 A/m.

Plain English Summary

Summary written for general audiences

Researchers exposed chick embryos to sinusoidally oscillating 50 Hz magnetic fields during their first two days of development. In the first series, abnormal embryo percentages were 16% in controls, 16% at 0.1 A/m, 14% at 0.3 A/m, 29% at 1 A/m, and 32% at 10 A/m. In the second series, abnormal embryo percentages were 17% in controls, 10% at 0.4 A/m, 19% at 0.6 A/m, 17% at 0.9 A/m, and 36% at 1.35 A/m. Only the 1.35 A/m group was significantly different from controls in the second series. The results suggest that exposure causes abnormal development and that no abnormalities are induced below a threshold between 0.9 and 1 A/m.

Why This Matters

The first series tested field strengths of 0.1, 0.3, 1, and 10 A/m. The second series tested field strengths of 0.4, 0.6, 0.9, and 1.35 A/m.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 50 Hz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 50 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study.

Cite This Study
Unknown (1987). Relationship between field strength and abnormal development in chick embryos exposed to 50 Hz magnetic fields.
Show BibTeX
@article{relationship_between_field_strength_and_abnormal_development_in_chick_embryos_exposed_to_50_hz_magnetic_fields_ce4631,
  author = {Unknown},
  title = {Relationship between field strength and abnormal development in chick embryos exposed to 50 Hz magnetic fields},
  year = {1987},
  doi = {10.1080/09553008714552301},
  
}

Quick Questions About This Study

Chick embryos were exposed to sinusoidally oscillating 50 Hz magnetic fields during their first two days of development.
The first series used magnetic field strengths of 0.1, 0.3, 1, and 10 A/m.
Abnormal embryo percentage was 16% in controls, 16% at 0.1 A/m, 14% at 0.3 A/m, 29% at 1 A/m, and 32% at 10 A/m.
In the second series, abnormal embryo percentage was 17% in controls, 10% at 0.4 A/m, 19% at 0.6 A/m, 17% at 0.9 A/m, and 36% at 1.35 A/m.
The results suggest that exposure causes abnormal development and that no abnormalities are induced below a threshold between 0.9 and 1 A/m.