This report provides a comprehensive analysis of dietary planning across the lifespan, focusing on a specific case study of Roger. It begins with an introduction and case overview, detailing Roger's health priorities and lifestyle factors. An anthropometric evaluation, including BMI and waist-to-hip ratio calculations, determines Roger's obesity status and target weight. A thorough dietary evaluation identifies nutrient deficiencies and excesses in Roger's current intake, highlighting issues such as excessive sodium, sugar, and saturated fat consumption. The report then outlines a detailed treatment plan with specific, measurable, achievable, relevant, and time-bound (SMART) goals for both short-term and long-term dietary and lifestyle changes. Meal suggestions are provided to address deficiencies and excesses, offering practical guidance on breakfast, lunch, dinner, and snack options. The report concludes by emphasizing the importance of a life course approach to nutrition and the strategies to promote a healthier lifestyle. The report includes an appendix with detailed nutrient analysis, food lists, and visual representations of Roger's dietary intake.