DHA omega-3 is to our brains as calcium is to our bones. It accounts for 97 percent of the omega-3 fats in the brain. Yet, most Americans don't get enough of this nutrient.

DHA is the most abundant omega-3 fat in our brains. And, because our bodies don't efficiently make DHA, we need to eat foods rich in this important nutrient in order to keep our brains functioning optimally.

Use it or lose it: Numerous studies have shown that the brain is capable of learning and retaining new facts and skills throughout life, especially with frequent intellectual stimulation, including the ultimate expression of potential — creativity.