With the summer heat and humidity upon us, it is nice to escape every now and then the mugginess and soaring temperatures. Escape into a slightly cooler space, except that those spaces are impossible to find.
I think this is a recurring summer topic. Last year, I wrote that instead of cooling off some, we are sent into a deep freeze. I dread stepping into and out of any grocery store, which usually has been turned into one giant freezer. Going to the movie theater requires extra warm clothing in order to avoid hypothermia. The first thing we do when stepping into a restaurant or bar is scoping out the location of the air vents in order to find a seat that is outside the reach of the freezing draft.
I wrote about the industry standard for air conditioning including the recommended temperature ranges, and contemplated the need for a more adaptive approach. An approach that sets indoor temperatures somewhat proportional to outdoor temperatures, making the transition from the outdoors to the indoors much more pleasant, and less like a temperature shock.
The constant transition from the outdoor 90’s into the conditioned mid to lower 70’s cannot be good for our physiology. Or is it? Well, that’s what Google is for.
I searched for negative health effects associated with air conditioning or excessive air conditioning, and found … nothing!
All I found were references to excessive heat and associated health risks; or the spread of bacteria and mold spores through AC systems or reported cases where Legionnaire’s disease has been spread from cooling towers. But nothing really on the effect on our physiology.
I tried something else: I Googled the same subject in German. Et Voila, (pardon my French) I stumbled on a couple of references to sources that discussed the issue of temperature differentials between air conditioned spaces and the outdoors, and associated health issues.
One recommendation that showed up a couple of times, was to restrict the differential to 10 degree Fahrenheit. Admittedly, this has to be set into the context of central Europe, which doesn’t all that often match our Midwestern summer temperatures.
The German web references also mention that the transition across a broad temperature differential makes our circulatory system work extra hard. On reference compares it to a sauna experience, except that in the case of the sauna the cooling down time is relatively short, followed by a resting time in a normal temperature environment. Plus the cycles from hot to cold during a sauna experience are typically limited to two or four times.
Running a number of errands during a hot summer day can in fact exert more stress on our physiology and circulatory system than a typical sauna visit.
Now, why is it that this is not discussed in the English language? Or is it just me, doing a lousy job on Google? Have you come across serious articles and publications that address this topic? If so, I really would like to know about it! Please leave a comment.