What is the fundamental reason massive blue stars deplete their core hydrogen fuel much faster than average stars?

Answer

They must sustain nuclear fusion at a high rate to counteract immense inward gravity

Because blue stars are far more massive, they must sustain nuclear fusion at an astronomical rate to counteract the immense inward crush of gravity, leading to rapid fuel depletion.

What is the fundamental reason massive blue stars deplete their core hydrogen fuel much faster than average stars?
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