The ketogenic diet must be carefully crafted and tailored to meet the needs of each patient and reduce the risk of side effects. It should only be used under the care of medical professionals and dietitians, and it may take some time to establish the ideal ratio of fat versus proteins and carbohydrates and other diet variables for each individual patient to experience optimal tolerance and benefits. Variations on the ketogenic diet, including the Modified Atkins Diet, and diets based on MCT oil have also been shown to be beneficial for some GLUT1 deficiency patients.