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The human body is a watercooled biological machinery
(lemmy.world)
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this post was submitted on 09 Aug 2024
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Showerthoughts
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We basically run on tiny combustion engines. Exothermic reactions.
We aren't a passive 98 degrees, we would be hotter if it wasn't cool enough outside. Higher heat would cause different cellular structures to become misshapen, leading to system breakdown. I'd be like trying to run a cpu cooling loop with boiling water.
And I'd add to that that if our thermal dissipation is overwhelmed, our internal heat build up. To do that heat dissipation, we need to have an environment that suck out more heat out of us than what we produce. If the environment is too hot, the heat build up and as Deadrek says, our internal inner workings beak down.
That why we sweat. Water suck out a lot more heat than air, because it wants to saturate the ambiante air, and to do that it suck up our body heat to become steam. Rince and repeat (literally).
But once the air is to humid, it gets more and more difficult for our sweat to evaporate, which makes it ineffective. That why we can kinda survive in a 90°C + sauna (albeit not for long, but for a different reason), but not in a 37°C (98°F) 100% humidity place like some tropical rainforest. At least, not without specialized acclimatation and survival techniques.
There's actually theoretically an endothermic reaction we do. E coli can undergo an endothermic reaction if it has enough zinc. It's entirely possible this is why we have an appendix. I'll link studies if anyone is interested
Link it, I'm always up for some
Sure. Please note that an official metastudy proving this has not come out, so you'll have to do some dot connecting yourself.
"Thermodynamic Studies of the Mechanism of Metal Binding to the Escherichia coli Zinc Transporter YiiP" https://www.sciencedirect.com/science/article/pii/S0021925819755392
"Association of Appendicitis Incidence With Warmer Weather Independent of Season" https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9530968/
"Association of the Bacteria of the Vermiform Appendix and the Peritoneal Cavity with Complicated Acute Appendicitis in Children" https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10252422/#:~:text=Bacteria%20identified%20in%20the%20lumen,in%20uncomplicated%20and%20complicated%20appendicitis.&text=Escherichia%20coli%20%2B%20Streptococcus%20spp.&text=Escherichia%20coli%20%2B%20Streptococcus%20spp
"Metabolic analysis of acute appendicitis by using system biology approach" https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6347980/
"Zinc intake ameliorates intestinal morphology and oxidative stress of broiler chickens under heat stress" https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2023.1308907/full
Basically, not only should we all be supplementing with zinc during hotter months, but also this has indications for the purpose of the appendix and possibly a way to make air conditioning out of our feces.