In episode 16 of season 6 of Inside the Science we’re highlighting the study, "Transcutaneous electric nerve stimulation (TENS) for acute low back pain: systematic review" with its author Dr. Christina Abdel Shaheed. She talks about the intent behind a TENS unit, specfics about the three randomized control trials included in this review which met the inclusion criteria, what the evidence says about TENS for chronic low back pain, the interpretations she’d advise in situations like this where there is simply a lack of evidence for an intervention, how TENS may be viewed as an alternative intervention to opioids, the clinical implications and the big takeaways.