Scott Keatley, RD, from Keatley Medical Nutrition Therapy, provides crucial insights for keto dieters looking to manage their carb intake while still enjoying fast food in this article. He explains the ketogenic diet's principle of significantly reducing carb intake to encourage the body to burn fat for energy—a state known as ketosis. Keatley emphasizes that on a keto diet, the daily carb intake is usually limited to a maximum of 50 grams. His contribution helps readers understand the dietary framework necessary for maintaining ketosis while navigating fast food options like McDonald's, effectively bridging the gap between strict dietary control and real-world dining experiences.