Posted by Larry Hoover on January 21, 2007, at 9:54:42
In reply to Re: EPA vs DHA-Please explain, posted by Jimmyboy on January 17, 2007, at 17:47:50
> I would like to know this too.. I am not quite sure that no DHA is a good thing though. Seems to me that everyone jumped on that Stoll guy from Harvard's brand "Omega Brite" that is almost all EPA as the model of fish oil for mood disorders.
EPA and DHA serve very distinct functions in the brain. EPA is cyclyzed via COX enzymes to produce regulatory molecules such as prostaglandins. These have immediate effect, so that was what was targetted in the mood studies.
> But , here is a simplistic argument , so feel free to shred it :
>
> Proponents say that "countries that eat a lot of fatty fish have less depression/bipolar". Ok , I believe that.. but.. Do they breed special fish in those countries that only contain EPA in them.. no , it has DHA in there also .Indeed. And other psychologically good substances, too. DMAE, for example. And, again blowing nutritional myths out of the water, proteins are not bioequivalent. It has long been held by nutritionists that complete proteins are bioequivalent. Soy protein is the same as meat protein is the same as fish.....well, maybe not so. Rodents fed supposedly bioequivalent complete diets, with the only difference being soy vs. fish protein, had significantly different performance on cognitive tasks. Yes, fish is brain food. Just why is still a major controversy, but the practical difference has been demonstrated.
> I think there is some marketing going on with these 100% EPA formulas , notice how ridiculously much more they are than regular fish oil?
The isolation process is complicated, but you can be sure that price margins are such that profit is made on each part of the cost.
> Anyway, don;t know much about it, but its just a hunch, I would like to hear from people who know more ..
>
> JBI am opinionated. Does that count?
Lar
poster:Larry Hoover
thread:723138
URL: http://www.dr-bob.org/babble/alter/20070114/msgs/724745.html