The frequencies don't have to be new so much as understood.
NASA has concluded electromagnetic frequencies are actively healthy for humans, specifically promoting neural tissue regeneration, so try not to unilaterally dismiss everything crystal hippies say.
babies, bathwater, all that.
https://ntrs.nasa.gov/citations/20030075722
NASA's doing research right now with tvmf to develop cartilage regeneration as well.
https://technology.nasa.gov/patent/MSC-TOPS-96
throwing a magnet bracelet on isn't going to cure cancer, but magnetism has clinically significant effects on many basic physiological processes like the circadian rhythm and that's why it keeps being studied.