Did you know it was this old?

Electrical energy and light have been used for treating health conditions and pain relief since ancient times.  The first use of electrical currents for this purpose has been traced to the ancient Romans who used electrical fish from the Mediterranean Sea to treat gout pain.  Even earlier at the eve of the Bronze Age the Chinese used acupuncture needles, which create low electrical discharges when inserted in the body.  The ancient Greeks have been known to treat health conditions by bathing patients in filtered light of specific frequencies.