If the body needs calories to survive, how can it go into starvation mode and slow down the metabolism? I hear of people trying to lose weight who can’t because they aren’t eating enough calories. Does your body shut down certain systems? If there is a base minimum, how can “starvation mode” change that on a biological level?
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To clarify, by starvation mode you’re asking about a person who has maintained a caloric deficit for a sustained period of many days or weeks, not someone who hasn’t eaten in 6 hours?
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