Magnetic therapy is simply the therapeutic application of magnets and can be delivered in many forms. In a 12-week, randomized trial, subjects with MS laid down on a metal mat for 8 minutes twice daily. The device delivered low-frequency, pulsed electromagnetic field therapy. Another study had subjects with MS wear wristwatch-size, magnetic pulsing devices called Enermed for 10 to 24 hours daily for 2 months. Another device also delivered low-frequency magnetic stimulations at 37.5 mT and a sequence of pulses at 4 to 7 Hz three times weekly for 2 months. These studies demonstrated consistent benefits in reducing fatigue but no benefit for depression in subjects with MS.53

B. Jacobs, S. Pierce (2017) Chapter 14 – Multiple Sclerosis. Integrative Medicine (Fourth Edition)
2018, Pages 133-142.e2