I went to a chiropractor,turns out he in peddling LED red light and some pills for a little over $4,000 You can google led for for nephropathy.most places talk about red led. One place mention blue. Some chiropractors are selling acupuncture. I have never heard sauna . All are vague about results. I regret that I didn't keep a list of web-sights that I visited.
.