The responses from Rowan and Dr. Morbius suggest that they think this was an alarm call -- likely caused by the bad choice of wording in the title of my post . The article and study, though, made no alarmist calls. The article reported on a carefully done study of an increasingly observed trend in intense events, that inexperienced participants who had been told to watch for dehydration were over hydrating themselves, and the study indentified likely factors, slow pace being one. The only changes being suggested were for the organizers of marathons and other athletic events, and for emergency rooms that are treating stricken athletes, and the primary change seemed to be to do a salinity test of blood. Not exactly a call to arms.

As to whether it identified a problem for me - I never said that I thought I had a problem. But it was new information (for me) about how the body works, and gave me insight into the observations I was making about how my body feels during and after my commute and training rides, especially in extreme heat.