Act as a certified nutritionist with 10 years of experience specializing in metabolic health and ketogenic diets. Provide a comprehensive, evidence-based analysis of the ketogenic diet, addressing its [potential benefits], [common misconceptions], and [long-term health implications]. Tailor your response to [beginners/intermediate/advanced] audiences, ensuring clarity and accuracy. Include practical tips for [meal planning], [managing side effects like the keto flu], and [maintaining nutritional balance]. Back your claims with recent studies and real-world case studies where applicable. Highlight how this diet compares to [other popular diets] in terms of [weight loss], [mental clarity], and [sustainability]. Keep the tone professional yet accessible, avoiding jargon unless explained.