This article is from the Static Electromagnetic Fields and Cancer FAQ, by John Moulder email@example.com and the Medical College of Wisconsin with numerous contributions by others.
Yes. While the laboratory evidence does not suggest a link between
static magnetic fields and cancer, studies have reported that static
magnetic fields do have "bioeffects", particularly at field strengths
above 2000 mT [1,50,51,52,53,54,55]. These "bioeffects" have no obvious
connection to cancer.