eli5 what would the effects be on someone who never left 500 elevation that traveled to 1000 elevation? would it mimic the bends? decompression illness? dementia?

Question

eli5 what would the effects be on someone who never left 500 elevation that traveled to 1000 elevation? would it mimic the bends? decompression illness? dementia?

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Answer 1

Not much. I’ve gone from sea level to 3,000′ many times with no issue.

I’ve flown from sea level to 7,000′ one day and hiked to 13,000′ the next and got a headache.