When closing in on age 60, my doctor ran a bunch of tests, including kidney function. He was astonished at the results which said I had the kidneys of a 22 year old while he explained that the kidneys were an organ that was supposed to age with the body and asked me how I had done it. I simply said it must be all that distilled water I drink. He then wanted to know where I got my trace minerals and I told him "from Celtic Sea Salt and/or Himalayan Pink Salt."
I put a small pinch in my water glass to remineralize it.