Metabolic typing suggests that individuals have distinct nutritional requirements based on their unique metabolic makeup. It encompasses different systems such as carbohydrate types, protein types, and mixed types. Carbohydrate types thrive on a high-carbohydrate, low-fat diet, while protein types do well on a high-protein, low-carbohydrate approach. Mixed types, on the other hand, can adapt to various macronutrient combinations. However, it's important to note that metabolic typing lacks support from mainstream science, and consulting a healthcare professional before making dietary changes is advised.