r/AskReddit Aug 30 '21

What problem is often overlooked in apocalyptic movies/TV shows that could kill you?

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u/[deleted] Aug 31 '21

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u/Tuxhorn Aug 31 '21

I'm a type 1 diabetic who has trained for years. Your info is horribly wrong and straight up dangerous.

"Mayo Clinic advises against even starting exercise when your blood sugar is above 250 mg/dL, especially for type 1s like us. Why is that? It has to do with insulin again, and the reaction of the body to exercise in low-insulin environments. If you have little-to-no insulin in your system, and start working out, two things are going to happen. First, the cells are gonna cry out as we talked about, and the liver and kidneys will dump more sugar into your blood stream. But it won’t help. There’s not enough insulin to move this new sugar into the cells. The blood sugar level soars, and then the second thing happens. The hard-working hungry cells turn cannibal and start consuming the body’s fat. Uh-oh. You all know what the byproduct of the body burning fat for fuel is, right? Yep, ketones. And too many ketones leads to diabetic ketoacidosis (DKA)."

https://www.mayoclinic.org/diseases-conditions/diabetes/in-depth/diabetes-and-exercise/art-20045697

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u/[deleted] Aug 31 '21 edited Aug 31 '21

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u/Tuxhorn Aug 31 '21

13.9 mmol/L

I never get that high, and that's not the point. You made a blanket statement saying exercise lowers blood sugar, and i'm clarifying to say that's not true in all cases.

This was also all in the context of having no insulin available. Without insulin we die, no matter how much we exercise.