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MRI fields might reduce vitamin D – May 2013

Comment by VitaminDWiki - this is the first indication that magnetic fields could reduce vitamin D

Static Magnetic Field Induced Hypovitaminosis D in Rat.

J Vet Med Sci. 2013 May 1.
Aïda L, Frédéric L, Soumaya G, Philippe H, Mohsen S, Hafedh A.
Laboratory of Integrative Physiology, Faculty of Sciences of Bizerte, Carthage University.

In the following study, we mainly investigate the effects of static magnetic field (SMF) (128 mT, 1 hr/day during 5 consecutive days) on 25-hydroxyvitamin D3 and calcium homeostasis.
Wistar male rats, weighing 50-70 g, were randomly divided into four experimental groups:

  • control,
  • SMF-exposed rat,
  • co-exposed rats (the last day and after exposure rats received a single dose of vitamin D per os) and
  • supplemented with vitamin D group (without exposure to SMF).

Exposure to SMF induced a decrease of plasmatic 25-hydroxyvitamin D3 level (P<0.001). While, calcium and phosphorus levels were not affected (P>0.05).
The same treatment failed also to alter body, relative liver and kidney weights. Interestingly, oral supplementation with vitamin D corrected hypovitaminosis D induced by SMF.
Likewise, the same treatment failed to alter calcium homeostasis.
More studies are needed to evaluate how SMF induces hypovitaminosis D.

PMID: 23648376
PDF is attached at the bottom of this page

Rats got about 1/10 Tesla for 1 hour per day for 5 days
Vitamin D levels dropped from 22 ng to 14 ng

Patients getting MRI receive 0.5-3.0 Tesla for about 1/2 hour, thus about 10X as intense, but perhaps only 1/10 of body

MRI also used to diagnose:

Passengers in magnetically levitated trains get about 1/20 Tesla (Note: this study, while made in Wisconsin, was published in Japan)

Attached files

ID Name Comment Uploaded Size Downloads
2476 Magnetic field.jpg admin 08 May, 2013 16.07 Kb 1389
2475 Magnetic field reduced vitamin D levels.pdf admin 08 May, 2013 349.46 Kb 3335