The best replacement for kidneys is back pain.

The best alternatives to kidneys are rated as following:
★★★★★  back pain
★★  lower back
★  blood pressure
★  lower back pain
★  just back pain
  ovaries
  kidneys

Your alternative for kidneys is not listed? Suggest!
Speaking about kidneys, one probably shouldn't forget about two ureters.

Other search terms related to kidneys and their ratings are:
★★★★★ two ureters
★ dialysis
You have in mind a companion for kidneys and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of kidneys in all years. Click on graph for more.
kidneys
back pain
lower back