What is the difference between ALA and EPA/DHA?
To answer this will require a little biochemistry. It helps to appreciate that oils are made up of fatty acids, and all fatty acids are primarily long chains of carbon atoms that are bonded together. EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid) are 20 and 22 carbons long, respectively. ALA is only 18 carbons long. The body has an ability to take the 18 carbon omega-3 from flaxseed and lengthen them into EPA and DHA. EPA and DHA are converted into anti-inflammatory prostaglandin PG3. Prostaglandins are master hormones that regulate inflammation in the body. EPA and DHA have been shown to reduce platelet stickiness, and therefore reduce risk of clots that can cause heart disease; lower risk of atherosclerosis; lower high triglycerides; lower elevated blood pressure; and reduce inflammation. You can get EPA and DHA directly from fatty fish found in cold waters. However, omega 3 (found in raw flax seeds and oils, raw nuts, and leafy green vegetables) is also converted into EP
