Recent comments in /f/askscience

Q-uvix t1_jbvhxvc wrote

That first article (or the abstract at least) doesn't actually suggest this.

It shows people who have had heatstrokes are more susceptible to them. That's not the same as the previous heatstroke causing or contributing to their susceptibility.

Makes sense that people who were at higher risk already are more likely have had one in the past.

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SocksAndPi t1_jbvel8s wrote

I cannot sweat, therefore, I'm very susceptible to heat-related illness. When I had my first heat stroke, the doctor said I'm more sensitive to heat now and need to be more mindful of my clothing choices, outside/indoor temperatures, monitor my body temperature, and always let any future doctor know about it because some medications can also cause a sensitivity/intolerance to heat.

This article from the '90s discusses the psychological and physiological effects of heat stroke.
This PDF discusses the thermal injuries of the nervous system after heat stroke.

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exphysed t1_jbv866m wrote

Repeated short term exposure to heat (without heat stroke) causes many of the same adaptations as exercise training including plasma volume expansion, improved cardiac output, decrease sweat sodium concentration, and increased thermoregulation capabilities. This makes a person less likely to suffer heatstroke.

I would imagine there could be permanent damage related to severe heat stroke, but I would be surprised if it made people more likely to suffer subsequent heat stroke (as one commenter liked to an article about). Anecdotally I know many people who’ve been hospitalized with heat stroke but have no issues in the heat subsequent to the initial incident

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jfincher42 t1_jbv4ifp wrote

So in that case, how critical is the positioning of the ligand and the receptor?

Going back to the lock and key analogy, sure, my key opens the lock, but only if it's inserted into the keyhole at a specific angle and orientation. I can't insert it backwards, or sideways, or even twisted a few degrees off axis and expect it to work.

If my key is subject to Brownian motion, even if there were m/b/tr-illions of them bouncing around outside the lock, I wouldn't expect one to fit within a given time frame.

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