What is a 4:1 Keto Diet? A Complete Guide
                                
                                
                                •
                                
                                
                        
                                    
                                    4 min read                                
                            
                                First introduced for treating epilepsy in 1921, the 4:1 keto diet is an extremely high-fat, very low-carb dietary therapy. It represents the strictest ratio in classic ketogenic diets, requiring precise calculation and monitoring, and is primarily used under medical supervision.