Magnetotherapy is a treatment that uses magnetic and electrical forces to improve the physiological and functional state of the body. One of its modalities is pulsed electromagnetic field (PEMF) therapy, which has demonstrated promising results in restoring cellular homeostatic functions. Although the precise mechanisms of PEMF are unknown, numerous studies have demonstrated that it increases cell differentiation, viability, and proliferation, as well as activation of various cellular signaling, all of which are essential for cell vitality. It is imperative to recognize that the duration and intensity of PEMF are by far the most important variables of its therapeutic action. PEMF can induce differentiation in a variety of stem cell types when administered at the appropriate dose. Likewise, PEMF therapy boosts cellular resistance to oxidative damage by upregulating antioxidant machinery in immune, muscular, and intestinal cells. In preclinical and clinical investigations, PEMF has also been proven to suppress tumor formation and metastasis, improve wound healing, and stimulate bone formation. This presentation will examine the how PEMF affects cellular signaling of stem cells, immunocytes, and cancer, as well as its potential application in the development of better treatment strategies for aging, inflammation, and metabolic syndromes.