For example, Immune System. Sushi is usually paired with ginger and wasabi, which are two things that have antibacterial properties. That means that if there are any concerns about about unwanted bacteria, wasabi and ginger could potentially help kill of bacteria, which will improve your immune system. Another example, Heart Health! Sushi is known for having high amounts of concentrated forms of omega3 fatty acids. The fatty acids act as a form that helps with your cholesterol which prevents clogged arteries.