Weak Magnetic Fields Manipulate Regeneration in Worms

At magnetic field intensities somewhat above that of Earth, stem cell proliferation shifts gears.

Written byRuth Williams
| 3 min read

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ABOVE: A Schmidtea mediterranea planarian flatworm.
COURTESY OF ALANNA VAN HUIZEN, WESTERN MICHIGAN UNIVERSITY

Exposure to weak magnetic fields can, depending on their strength, either slow or boost flatworm regeneration, according to a report in Science Advances today (January 30). The study provides evidence for a possible mechanism, showing that magnetic fields affect the production of reactive oxygen species, which in turn alter cell behavior.

“It’s a very nice paper because they are really trying to dig down into the effects of [magnetic fields],” says biophysicist Thorsten Ritz of the University of California, Irvine, who was not involved in the study. “They are not just adding to the zoo of effects that have been seen [before].”

Furthermore, “it provides the prospect that a weak magnetic field could be employed as a therapeutic tool to non-invasively regulate tissue formation,” says Daniel Kattnig, a biophysicist at the University of Exeter in the UK ...

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  • ruth williams

    Ruth is a freelance journalist. Before freelancing, Ruth was a news editor for the Journal of Cell Biology in New York and an assistant editor for Nature Reviews Neuroscience in London. Prior to that, she was a bona fide pipette-wielding, test tube–shaking, lab coat–shirking research scientist. She has a PhD in genetics from King’s College London, and was a postdoc in stem cell biology at Imperial College London. Today she lives and writes in Connecticut.

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