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

Lack of a need for the mechanism to exist relative to the selection pressures of evolution. It would require a population eating itself to death due to abundance before its members could reproduce.

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