How long until the body adapts to intermittent fasting?: Your Timeline for Success
                                
                                
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                                    5 min read                                
                            
                                According to Johns Hopkins neuroscientist Mark Mattson, it can take approximately two to four weeks for the body to become accustomed to an intermittent fasting schedule. This initial period is when the most significant metabolic and physical changes occur, leading to how long until the body adapts to intermittent fasting becomes a smoother, more beneficial experience.