Restrictive diets are eating plans that limit certain foods or food groups to achieve specific health goals. These diets can be used for weight loss, managing health conditions, or improving overall well-being. Common examples include ketogenic diets, which reduce carbohydrates, and gluten-free diets, which eliminate gluten-containing foods. While some people may find success with restrictive diets, they can also lead to nutritional deficiencies if not carefully planned. It's important to ensure that any diet provides essential nutrients. Consulting a healthcare professional or a registered dietitian can help individuals create a balanced approach to their dietary needs.