If you visit the island of Okinawa, it's a far cry from the war torn island it used to be only a few short decades ago. Long after World War II, the inhabitants have returned to a lifestyle that has lasted them thousands of years.
Now considered one of the top 5 longest living cultures, people from Okinawa have practiced fishing and cooking seafood for as long as inhabitants have occupied the island.
According to Dr. Josh Axe, it is their diet high in fish, which has led to success for most long-living cultures. While replicating these cultures and eating fish daily (or at least often) would be the ideal scenario, sometimes life and budgetary constraints can get in the way.
If improving mood and feeling better isn't reason enough to eat more fish or supplement your diet, consider this. One of the greatest challenges with the modern standard American diet (SAD) is the ratio of omega-3 fatty acids to omega-6 fatty acids. The omega-3 fatty acids DHA and EPA are particularly important for proper brain functioning, but without adequate fish, few people have a 1:1 ratio.
Most people are anywhere between 15-20:1 (omega 6 to omega 3). In order to consume enough omega-3 fatty acids (DHA / EPA), you only need 6 ounces of salmon per day. That equates to 883 mg of EPA and 1,111 mg of DHA (more than enough). At the average cost of $17.99 per pound for salmon, you'd be paying approximately $6.25/day in salmon. While that isn't financially prohibitory, many people prefer to take fish oil supplements for other reasons. These include fish taste, budget, and food diversity. Whether you consume your DHA and EPA in fish oil, krill oil, or cooked fish, numerous studies show reduced inflammatory markers.