Why Japanese food is healthiest among all foods?

It is said that japanese food is the healthiest food among all the foods. Well this is not just a saying instead it is true.

The reasons behind this is:

1. All the food is steamed.

2. They have ample of seafood.

3. Fermented food.

4. Their desserts have low sugar.

5. They have ample carbohydrates but no fats.