Reduce of labor pain (When used on high frequency, the TENS unit, selectively stimulates certain non-pain-transmitting nerve fibers to send signals to the brain that override other nerve signals carrying pain messages. When used on low frequency, the unit stimulates the production of endorphins, by activated opioid receptors)
Increases endorphin level
Postpone or avoid of request of epidural
Continued active participation by the woman
Less medical interventions
Especially effective for back pain (but not only) and prolonged painful pre labor (prodromal labor)
No loss of other sensations or contraction pain
Continued active participation by laboring person
Freedom to walk and move
No decrease of mental function
Fewer babies in to NICU