Pufa-Puffin
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According to this study, exposing rats to electromagnetic field for 26 days caused decrease of Ca, Mg, P, Fe and Zn (all cariostatic minerals - minerals necessary for tooth health) and increase in heavy metals (As, Cd, Pb) and selenium (caries-promoting element) in rat's teeth.
The concentration of arsenic was increased by order of magnitude (0.0094 mg/kg in control group vs 0.085 mg/kg in the EMF group) and the concentration of zinc halved (0.1335 mg/kg in control group vs 0.0682 mg/kg in the EMF group)
Interestingly, giving the rats melatonin (10 mg/kg) or Ganoderma lucidum - Reishi Mushroom (20 mg/kg) prevented most of the damage done by EMF.
The paper doesn't mention the exact frequency of EMF used, just that it was extremely low-frequency EMF (could be anything from 1 to 3000 Hz).
The concentration of arsenic was increased by order of magnitude (0.0094 mg/kg in control group vs 0.085 mg/kg in the EMF group) and the concentration of zinc halved (0.1335 mg/kg in control group vs 0.0682 mg/kg in the EMF group)
Interestingly, giving the rats melatonin (10 mg/kg) or Ganoderma lucidum - Reishi Mushroom (20 mg/kg) prevented most of the damage done by EMF.
The paper doesn't mention the exact frequency of EMF used, just that it was extremely low-frequency EMF (could be anything from 1 to 3000 Hz).