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THE EFFECT OF MICROWAVES ON BONE AND BONE MARROW AND ON ADJACENT TISSUES

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Joseph P. Engel, J. F. Herrick, Khalil G. Wakim, John H. Grindlay, Frank H. Krusen · 1950

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This pioneering 1950 research established early scientific interest in how microwave energy affects bone marrow and blood-forming tissues.

Plain English Summary

Summary written for general audiences

This 1950 study by Joseph Engel examined how microwave radiation affects bone, bone marrow, and surrounding tissues in laboratory animals. The research focused on microwave diathermy effects and tissue temperature changes. This represents some of the earliest scientific investigation into how microwave energy interacts with skeletal and blood-forming tissues.

Why This Matters

This research holds remarkable historical significance as one of the earliest investigations into microwave biological effects, published just five years after World War II when microwave technology was emerging from military radar applications. The focus on bone and bone marrow is particularly important because these tissues are critical for blood cell production and immune function. What makes this study especially relevant today is that bone marrow contains some of our most rapidly dividing cells, which research consistently shows are among the most vulnerable to electromagnetic radiation damage. The temperatures generated by microwave diathermy in 1950 medical applications were likely far higher than what we experience from modern devices, but the fundamental biological mechanisms Engel was studying remain the same. Today's wireless devices operate at similar microwave frequencies, and while the power levels are lower, we're exposed continuously rather than in controlled medical sessions.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
Joseph P. Engel, J. F. Herrick, Khalil G. Wakim, John H. Grindlay, Frank H. Krusen (1950). THE EFFECT OF MICROWAVES ON BONE AND BONE MARROW AND ON ADJACENT TISSUES.
Show BibTeX
@article{the_effect_of_microwaves_on_bone_and_bone_marrow_and_on_adjacent_tissues_g3869,
  author = {Joseph P. Engel and J. F. Herrick and Khalil G. Wakim and John H. Grindlay and Frank H. Krusen},
  title = {THE EFFECT OF MICROWAVES ON BONE AND BONE MARROW AND ON ADJACENT TISSUES},
  year = {1950},
  
  
}

Quick Questions About This Study

The study investigated how microwave radiation affected bone, bone marrow, and adjacent tissues in laboratory animals. Researchers focused on temperature changes and tissue responses to microwave diathermy, which was an emerging medical treatment using electromagnetic energy.
Bone marrow produces blood cells and immune system components, making it one of the body's most critical tissues. Because it contains rapidly dividing cells, bone marrow is potentially more vulnerable to electromagnetic radiation effects than slower-regenerating tissues.
Medical diathermy used much higher power levels than modern wireless devices, but operated at similar microwave frequencies. While today's exposures are lower intensity, they're continuous rather than the brief, controlled sessions used in 1950s medical treatments.
This represents some of the earliest scientific investigation into biological effects of microwave radiation, conducted just five years after WWII when microwave technology was transitioning from military radar applications to civilian and medical uses.
Early researchers like Engel were beginning to understand that microwaves heat tissues by causing water molecules to vibrate rapidly. This thermal effect was the primary focus, though we now know microwaves can also cause non-thermal biological changes.