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[b said:
Quote[/b] (Jon Stark @ Sep. 26 2002,3:10)]Another thing to think about -- a far more straightforward way of getting omega-3 is by taking fish oil.
Of course, there are other issues. Some think flax has anti-estrogenic effects. Some people are strict vegetarians (so fish oil is a no no). Fish oil might contain mercury and other contaminants. So it's up to you to decide how best to get your omega-3s.
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Fish Oil caps are moreso a supply of EPA/DHA (this is what n-3 fatty acids are converted to in the body basically... however the rate is rather low, so some people choose to take fish oil caps to get the EPA/DHA rather than taking 2-4 Tbsp of n-3's such as flax oil.) read this to know what I'm talking about if you don't =
http://weightrainer.virtualave.net/nutrition/fats.html
If you do choose todo this.. make sure you buy molecularly distilled fish oil caps.. anything else is crap and most likely contains nasty stuff along with it (toxins/carcinogens.. not alot, but at the same time, not something you want to purposely intake for a period of time).
In regards to flax seed oil as and its effects on estrogen... Flax seeds themselves (not the oil) contain a very high amount of lignans (site antagonists/blockers) which DO act as estrogen blockers at the site (there is an argument as to how much... and a comparision to flax seeds versus say nolvadex is exaggerated IMO).. this anti-estrogenic effect can be good and bad... it depends on what ER sites are blocked, how long, and a slew of other factors.... for instance cholesterol HDL:LDL ratios could be theoretically lowered (bad) and IGF-1 levels could be negatively impacted.. although nobody seems to know exactly which sites are binded to, etc... so who knows.
Flax seed oil itself does not have hardly any anti-estrogenic effects IMO compared to flax seeds themselves... this is because then they are cold pressed to form the oil the lignans are removed... and people that sell "high lignan flax seed oil" are only allowing the lignans to stay in by using a less "clean" pressing process (which is bad cuz you don't get pure flax seed oil...). First off, the true lignan content in such "high-lignan" flax seed oils is very low compared to flax seeds themselves (once again) AND virtually none of the lignans in the oil are actually consumed because they settle to the bottom of the bottle (and all bottles are opaque so light can't get in... so you don't see the lignans building up on the bottom, but they are there).
Take home point = If you want an estrogen control supplement for say.. a month or two of a cutting period.. flax seeds themselves are the better choice (however, the lack of information on the specific blocking properties makes it a gamble IMO).
If you want a source of n-3 fatty acids... take plain ol flax seed oil (not "high-lignan" as they are less pure and the lignans don't even get consumed).
http://www.goldflax.com (for flax seeds)
http://www.iherb.com/organicflax.html (for normal flax seed oil)
There are a zillion other sites, but that is what i use.
Hope this helps