Sustainable sushi is better for your health and the environment because it raises questions about the sources of the fish used—whether ingredients were caught or raised. It also raises questions about the vulnerability of the species (longevity and reproductive capability) and whether humans are overfishing the stock.
Sushi is also an excellent source of omega 3 and fatty acids which promote cell regeneration and prevent the onset of autoimmune diseases such as Lupus. Additionally, sushi is a delicious way of getting a healthy dose of antioxidants which helps prevent any oxidative damage to the skin and the DNA of cells. Antioxidants act as a shield against the free radicals that cause oxidative stress and cause cancer.