Content Summary : Background: Extremely Weak Pulsed Magnetic Fields Sandyk reported a number of patients with Parkinson’s disease (PD) who experienced significant improvement in symptoms following treatment with extra-cranial pulsed picotesla-range magnetic fields. 16 He also reported improvement in patients with multiple sclerosis with his device. 17 Sandyk reported that two AD patients experienced significant improvement in visual memory and drawing performance following external application of electromagnetic fields from 5 to 8 Hz. Improvement was also seen in other cognitive functions including spatial orientation, mood, short-term memory, and social interactions. 18 The disorganization of circadian rhythm, causally related to memory deterioration in old age, and possibly to Alzheimer’s disease, when treated with magnetic fields could lead to memory improvement among the elderly by means of resynchronization, or resetting the circadian rhythms. 19 Bardasano, using a plastic helmet device housing a set of coils generating fields of 8Hz and 7.5 picotesla, produced beneficial effects in patients suffering with PD. 20 Valentova used pulsed magnetic therapy at 25 Hz for 20 minutes over 10-12 exposures along with comprehensive spa therapy in patients with Parkinsonism and spasticity. At the end of treatment, the patient’s motor tests improved significantly for walking (p<0.001) and for change of position (p<0.01). The subjective tension in muscles of the lower extremities was reduced in 84.6% of cases, back complaints reduced in 84.6% and general improvement was reported in 96%. 21 Jacobson using low amplitude, extremely low frequency magnetic fields, reported his treatment of osteoarthritic knees in Alternative Therapies in Health and Medicine in 2001 and has received IDE market approval in Canada