How long can a person be alive without food?
                                
                                
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                                    4 min read                                
                            
                                Without water, a person can only survive for about a week, but with adequate hydration, the body's remarkable metabolic adaptations can extend survival without food for several weeks to months. However, how long can a person be alive without food is not a fixed timeline and depends on many critical factors, including initial body fat and overall health.