Salmon is particularly high in selenium, an important nutrient that is involved in DNA synthesis, thyroid hormone metabolism, and reproductive health. 
One of the top health benefits of eating salmon, either raw or cooked, is that it is high in omega-3 fatty acids. Omega-3 fatty acids help the body in several ways, including: Improved brain function. Decreased risk of cardiovascular problems, like heart attack and heart arrhythmia.
In fact, it is a good source of vitamin B12, niacin, potassium, and antioxidants that strengthen your immune system and give you a high-energy level. A 3-ounce serving of salmon supplies more than 100% of these nutrients.