Omega-3 fatty acids are polyunsaturated fats found in three main forms: ALA, EPA, and DHA. You need to add omega-3 fats to your diet because your body cannot produce enough of this fat on its own. Seafood sources such as salmon and fish oil contain omega-3 EPA and DHA fatty acids, while plant sources such as walnuts, flaxseeds and chia seeds contain ALA.
Omega-3 EPA and DHA fatty acids are important components of cell membranes, playing an important role in maintaining brain function and facilitating communication between cells. That is, this fatty acid affects cognitive health.
The body can convert ALA into EPA and DHA. However, as we age and begin to lose consciousness, this conversion rate begins to decline below 10%. When the diet lacks omega-3 fatty acids and DHA levels in particular, this will accelerate the aging process and affect memory.
Omega-3 acts as a powerful anti-inflammatory factor. When we have chronic inflammation in the body, cognitive health can decline and age-related chronic conditions can increase. Daily omega-3 intake helps reduce inflammation in the body, fighting some conditions related to age and inflammation.
In addition, higher blood DHA levels are associated with a reduced risk of Alzheimer's disease and dementia.