eli5: Why will the body continue to store excess fat to the point where it jeopardizes the person’s health?

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I understand food wasn’t always so abundant, and humans were well served to store excess consumed energy as fat for later use. What I don’t understand is why the body keeps storing fat to the point where a person becomes morbidly obese and it puts their entire health at risk. Why isn’t there a point where the body just let’s the extra calories pass through without saving for later?

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Anonymous 0 Comments

Humans did not evolve with unlimited food available effortlessly.

The body is optimized to work in conditions where food is either scarce, or required effort to acquire.

In conditions where a body will overeat without having to spend any energy, the good old strategy backfires, and stored energy limits body’s capabilities.

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