Why No Single Diet Works for Everyone

Every few years, a new diet claims to be the definitive answer. Low-fat. Low-carb. Keto. Intermittent fasting. Each has passionate advocates, and each has research behind it — which is exactly the point.

The research keeps saying the same thing

When diets are compared head-to-head in controlled studies, the differences between them tend to be small on average — but the differences between individuals following the same diet are large. Some people thrive on lower-carb eating; others do better with more balanced macronutrients. Adherence — whether you can actually stick with it — predicts success better than which specific diet you chose.

Why people respond differently

• Genetics affect how your body processes fat and carbohydrate
• Gut microbiome composition varies significantly between individuals
• Activity level, sleep, medication use, and existing health conditions all shift what works
• Food preferences and culture affect whether a plan is sustainable long-term

What personalization actually looks like

A personalized plan starts with your body composition scan, your labs, your schedule, and your food preferences, then adjusts based on how you're actually responding.