From an evolutionary perspective,what is the advantage of a set point for body weight?

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The set point for body weight is the weight that the body tries to maintain through various physiological mechanisms. From an evolutionary perspective, maintaining excess calories as fat during times of food abundance would have helped individuals survive during times of food shortages. This is because the stored fat could be used as a source of energy when food was scarce. Therefore, the advantage of a set point for body weight is that it allows for the efficient storage of excess energy when food is abundant, which can be used during times of scarcity.

From an Evolutionary Perspective,what Is the Advantage of a Set