The important thing to remember when eating sushi is that, like all foods, when eaten in excess it is not very healthy. The fresh, nutritious ingredients are not calorie free, although they are low in calories. Especially in the West, sushi is often made with fatty fish and vegetables like fried fish, eel, and avocado. In small amounts, these fats are actually good for you: in large servings, they are not. Sushi encourages dainty eating and small portions, because of the way in which it is prepared and served. Stick with traditional Japanese sushi, rather than Westernized versions with things like cream cheese in them, and enjoy your healthy meal.