May Aid in Weight Loss and Boost The Immune System

Tuna fish is low in calories and fat, but high in important elements such as protein. This fish's omega-3 fatty acids may increase leptin, a hormone that balances the body's food intake with the internal desire to consume more. This can help to minimize overeating and ensure that your body is just absorbing what it requires. According to a study published in the European Journal of Clinical Nutrition, omega-3 fatty acids are linked to leptin elevations in obese persons. Increased leptin levels may assist these people to avoid regaining weight after losing weight through calorie restriction.

Tuna has potentially beneficial amounts of vitamin C, zinc, and manganese, all of which are antioxidants in nature. Antioxidants are one of the body's defensive systems against free radicals, which are damaging byproducts of cellular metabolism and are linked to chronic illnesses. However, selenium is the true champion of tuna's immune-boosting ability. This fish is high in this mineral, providing about 200 percent of the daily value in a single meal. As a result, the fish is a potent antioxidant and immune-boosting meal.