About the spinal stenosis issue.
CS can't help with that. There is a surgical procedure you can read about on line using laser that you might be interested in. Easy to google search. (laser spine institute) So sorry about your back issues but CS only helps where a virus is involved in my opinion; can't do anything about back issues.
And your other question about "correct" measurements; no science on that. The various manufacturers produce at differing ppm. You could buy different brands and see what works best for you.
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Thanks for your comment. The best and sometimes most interesting "thoughts" of my life are about my grandparents. So much wisdom and folk remedies have been forgotten in the last one hundred years.
Regards, Dave
