Anyone out there know if there have been any conclusive, long-term studies on purification chemicals' (such as AM) effect on the body's natural bacterial and viral defense mechanisms, after prolonged consumption (thru-hike)?
To further frame this question, I'm alluding to the recent alleged discovery of hand sanitizer's eventual effect of bacterial resilience, etc. Does this theory/problem transfer when the treatment chemical is ingested vs topically applied?
In addition, despite being considered safely and widely used in municipal water treatment plants, are these chemicals – and others like them – free of all residual effect/trace on/in the body?
Any takers? Any scientists?

