This double-blind, placebo-controlled study examined the effects of pulsed electromagnetic fields on hair loss in men suffering from male pattern baldness. PEMF exposures were administered to the head for 12 minutes and were given weekly or twice weekly over a period of 36 weeks. Results found the PEMF treatment both prevented hair loss and promoted regrowth without side effects.
W.S. Maddin, et al., “The Biological Effects of a Pulsed Electrostatic with Specific Reference to Hair: Electrotrichogenesis,” International Journal of Dermatology, 29(6), 1990, p. 446-450.