It has long been documented that opioids (drugs like Vicodin, Oxy-Contin, morphine, and Dilaudid sometimes referred to as narcotics) lower testosterone levels. It appears that in addition to that, the resultant testosterone deficiency (Low T) can also reduce your pain tolerance.
The article quoted in the link above, that was presented at a meeting of The Endocrine Society, shows that testosterone replacement can improve a patient’s pain perception. This is something to consider carefully if you are on pain medication chronically.
Hydrocodone (the active opioid in Vicodin, Norco, and Lortab) is the most prescribed drug. People using this medication consistently will likely develop Low T. The double-edged sword effect is that this therapy will also increase your sensation of your pain. Comment below with any questions or ideas you have on the subject, we would love to hear from you!