This is directly from Udo's site.
Draw your own conclusions.
• Can the body convert ALA from Udo's Oil Blend into the n-3 derivatives EPA + DHA contained in fish oils?
• If so, how much conversion takes place?
• Is conversion sufficient for health needs?
All three of these questions were answered in October 2002, by two studies published in the British Journal of Nutrition (BJN) which measured the conversion of alpha-linolenic acid (ALA), the short chain n-3 essential fatty acid, into the long chain n-3 derivatives EPA, DPA, and DHA. The first study1, carried out with six women, showed that these women converted an average of 36% of the ALA they were given into long chain n-3 derivatives (21% EPA, 6%DPA, 9%DHA).
The second study2, done with six men, showed that the men converted an average of 16% of the ALA they received into long-chain n-3 derivatives (8%EPA, 8%DPA). In this study, the men produced no DHA. However, another study showed that men convert ALA to DHA as well