How many calories for 40? Your Ultimate Guide to Daily Calorie Needs
                                
                                
                                •
                                
                                
                        
                                    
                                    3 min read                                
                            
                                As metabolism naturally slows after age 30, a 40-year-old generally requires fewer calories to maintain weight compared to a younger person. Understanding how many calories for 40-year-olds is necessary for your specific goals, whether it’s weight loss, maintenance, or muscle gain.