Articles by Dr. Erdman are for informational purposes, and are not to be taken as specific medical advice.
In the last article we introduced the fact that there is a
difference in the origin of omega-3 fats, being either plant derived or animal
derived. The animal derived omega-3 fats also have differences in their origin,
either being fish based or krill based.
Here, we will further explain the differences, starting with
animal versus plant derived omega-3 fats.
Marine animal based fats are sourced from fatty fish such as
salmon, anchovies, sardines, herring, fish and krill. DHA is primarily a long
chain polyunsaturated fatty acid (PUFA) with 22 carbons, and EPA is a PUFA of
20 carbons. Since they are long chain fatty acids, they are more readily
available to your body.
The biological effects of EPA/DHA are mostly
anti-inflammatory and for communication within cells and between cells. The
last article listed many more effects. As much as 30% of the fatty mass of the
prefrontal cortex of the brain is DHA and 90% of the omega-3 fat found in the
brain is DHA. The development of the fetal brain is entirely dependent on the
availability of DHA. Pre-pregnancy should include super doses of EPA/DHA for
proper brain development.