Understanding the Multiple Meanings: What is the PhD diet?
                                
                                
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                                    4 min read                                
                            
                                According to a Harvard study, individuals whose diets were most similar to the Planetary Health Diet (PHD) had a 30% lower rate of certain chronic diseases. The phrase “What is the PhD diet?” is commonly searched but has multiple, distinct meanings that can cause confusion. It can refer to a global, science-based eating pattern, a specific commercial weight-loss program, or a brand of sports nutrition supplements.