Salmon is an omega-rich food — more specifically, it contains omega-3. It is directly linked to the brain and helps improve the function of cells, resulting in a lower risk of sadness, depression, memory issues, and for older people, dementia.Your body cannot generate omega-3 by itself, so eating foods like salmon is a necessity for better functioning. This type of fatty fish balances the hormones and makes you feel less chunky, controls your appetite, and boosts serotonin, the happy hormone.