Nutrition Diet Therapy Practice Exam 2025 – The All-in-One Guide to Master Your Certification!

The ketogenic diet is characterized by low carbohydrate intake as it aims to transition the body's metabolism from relying on glucose derived from carbohydrates to utilizing ketones, which are produced from fat breakdown. This metabolic state is known as ketosis. The diet typically comprises high-fat content, moderate protein, and drastically reduced carbohydrates, which allows individuals to effectively reduce body fat and stabilize blood sugar levels.

In contrast, the Mediterranean diet emphasizes a balanced intake of healthy fats, whole grains, fruits, vegetables, and lean proteins, with a moderate amount of carbohydrates rather than a low carbohydrate approach. The vegetarian diet focuses on plant-based foods and can vary in carbohydrate content significantly depending on food choices. The paleo diet encourages the consumption of whole foods resembling those eaten in the Paleolithic era, which can include higher carbohydrate sources like fruits and vegetables, though it sometimes limits grains and legumes. Thus, the ketogenic diet's hallmark is its strict reduction of carbohydrates, making it the distinguishing choice.