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Magnetic Fields and the Number of Blood Platelets

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Madeleine F. Barnothy, Jeno M. Barnothy · 1970

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Strong magnetic fields can force blood platelet-producing cells to relocate from bone marrow to spleen in just 20 days.

Plain English Summary

Summary written for general audiences

This 1970 study exposed mice to strong magnetic fields for 20 days and found that platelet-producing cells (megakaryocytes) decreased in bone marrow while increasing in the spleen. The research suggests magnetic field exposure can alter where blood platelets are produced in the body, potentially affecting blood clotting function.

Why This Matters

This early research reveals that magnetic fields can disrupt normal blood cell production, forcing platelet-producing cells to migrate from bone marrow to the spleen. What makes this particularly relevant today is that we're surrounded by magnetic fields from power lines, electric appliances, and wireless devices operating at much lower intensities but for much longer durations than this 20-day experiment. While this study used laboratory-strength magnetic fields, the biological principle it demonstrates - that magnetic exposure can alter fundamental blood cell processes - raises important questions about chronic, lower-level exposures we face daily. The fact that such effects were documented in 1970, decades before our current EMF-saturated environment, underscores how long scientists have understood that electromagnetic fields can influence basic cellular functions.

Original Figures

Diagram extracted from the original research document.

Page 2 - Figure 1 displays average platelet number as a percentage during exposure to magnetic fields and after removal from the field.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
Madeleine F. Barnothy, Jeno M. Barnothy (1970). Magnetic Fields and the Number of Blood Platelets.
Show BibTeX
@article{magnetic_fields_and_the_number_of_blood_platelets_g6940,
  author = {Madeleine F. Barnothy and Jeno M. Barnothy},
  title = {Magnetic Fields and the Number of Blood Platelets},
  year = {1970},
  
  
}

Quick Questions About This Study

Yes, this study found that 20 days of strong magnetic field exposure caused platelet-producing megakaryocytes to decrease in bone marrow and increase in the spleen, altering normal blood cell production patterns.
The study exposed mice to strong homogeneous magnetic fields for 20 days, which was sufficient time to observe significant changes in megakaryocyte distribution between bone marrow and spleen.
Megakaryocytes are large bone marrow cells that fragment to produce blood platelets, which are essential for blood clotting. When magnetic fields alter their location, it could affect platelet production and blood clotting function.
Yes, the researchers used proper controls by keeping equal numbers of mice in identical 'dummy magnets' without magnetic fields to compare against the exposed groups in both experiments.
The researchers used female virgin DBA/J2 strain mice aged 100-120 days old, with six mice in the first experiment and five in the second experiment for magnetic field exposure testing.