No single diet is universally superior because patients differ in hunger, culture, metabolic disease, medications, food access, gastrointestinal tolerance, body composition, and the ability to sustain a pattern.
AI can integrate large amounts of dietary, wearable, laboratory, and behavioral data, but it cannot currently produce a perfect plan or replace clinical responsibility.
DNA testing will improve diagnosis and treatment for selected forms of obesity, but common consumer panels currently promise more dietary precision than the evidence can support.
Precision medicine can improve diagnosis, treatment selection, and maintenance, but cure is a problematic claim for a chronic, heterogeneous, relapsing disease.
Obesity is a chronic disease involving excess or dysfunctional adiposity, but lifestyle and environment influence its development and treatment. Disease and lifestyle are not mutually exclusive categories.