Nutritional ketosis is a metabolic state achieved by reducing carbohydrate intake significantly, prompting the body to burn fat as its primary fuel source. When carbs are limited, the liver produces ketones from stored fats, which then serve as an alternative energy supply. This approach can support weight loss by increasing fat burning, reducing appetite, and improving blood sugar control, making it an appealing strategy for managing obesity. A well-planned ketogenic diet can help some people with obesity, particularly those with insulin resistance, achieve and maintain ketosis. However, it requires careful management to ensure balanced nutrition and is best pursued under medical guidance for safe, long-term results.