There are many health benefits of sushi. Some are that it is low in fat and high in protein. To me sushi is very filling so you don't need a lot of it for your meal. I usually get two rolls for dinner and one roll for lunch with maybe a small salad.
I always forget about the brown rice option! There is always a dollar or two extra charge, but even if you don't get it with brown rice sushi is still healthier then a million other things you could be eating especially while eating out. Another tip is to always ask for the low sodium soy sauce. It tastes the same as the regular and it's better for you.
This was taken from www.sushiencyclopedia.com and is very interesting:
"It consists of mostly protein, a little less than half the amount of carbohydrates (compared to protein in grams), and beneficial fat to lower your cholesterol. This is a golden ratio of food components when dieting. Bodybuilders use similar ratios of each of these components to drop their body fat. (Yes, they take unsaturated fat pills to melt away fat in difficult areas) Weight gain can result from an imbalance of carbohydrate, protein and unhealthy fat. In many cases, people eat foods that contain too many carbohydrates, and saturated fat compared to protein."
Since I have started to become obsessed with sushi it has helped me with my dieting. It is so tasty yet beneficial to my body so it's a win win! I am eating sushi as we speak...