Salmon is a low-calorie protein source that is rich in heart-healthy omega-3s, and low in saturated fat. It is also an excellent source of several B vitamins, antioxidants and potassium.  Studies show that salmon can help lower inflammation, which may reduce the risk factors for several diseases.  A growing number of studies also suggest that including salmon in your diet might improve brain function and even reduce symptoms of anxiety, depression and the risk of age-related memory problems.