When oxygen levels drop, every system in the body fights to survive — a look at how hypoxia disrupts cellular function, triggers compensatory responses, and crosses the line from adaptation to damage.

Oxygen is so fundamental to life that even a brief shortage sets off a cascade the body can barely contain. In this reel, we break down what hypoxia actually means — from the moment cells sense falling O₂, to the molecular switches that flip, to the physiological compensations that kick in (and why they sometimes make things worse). Whether it's high altitude, blocked airways, or failing circulation, the cellular struggle is the same. Know the science behind the silence before the damage becomes irreversible.