Untangling Covid-19, Altitude Sickness, and Conspiracy Theory

An emerging hypothesis has been mischaracterized by the alternative media

There’s a lot doctors still don’t know about Covid-19 and how it affects the body. While its usual symptoms — cough, trouble breathing, tiredness, and fever — are well documented, some of its other effects remain unexplained. In particular, a peculiar observation about the blood oxygen levels of some people with Covid-19 has generated some new hypotheses among physicians — and dangerous speculation among…