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Studies on fish oil
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<blockquote data-quote="Vince" data-source="post: 27238" data-attributes="member: 843"><p>General Information:</p><p><a href="http://www.powerpak.com/index.asp?show=lesson&page=courses/105467/lesson.htm&lsn_id=105467" target="_blank"> An Evidence-Based Medicine Approach to the Appropriate Selection of Supplementation with Omega-3 Fatty</a> - PowerPak.com, 6/1/07 - "Fish oils EPA and DHA appear to result in different physiologic effects than their precursor, the plant-derived ALA.12-14 Biosynthesis of EPA or DHA from ALA is limited. Although dietary consumption of ALA alone will prevent EFA deficiency, emerging scientific evidence indicates that for optimum health or body function, the fish oils EPA and DHA should also be ingested regularly, either from dietary or supplement sources. Use of ALA supplementation alone, even with high dose or long-term consumption, does not result in lowered triglyceride concentrations seen with EPA or DHA, nor does it demonstrate similar in vitro susceptibility to oxidation of LDL cholesterol"</p><p><a href="http://www.jhasim.com/files/articlefiles/pdf/ASIM_Issue_5_6A_p511_517.pdf" target="_blank"> The Heart-Healthy Benifits of Omega-3 Fatty Acids</a> - John Hopkins University School of Medicine, 6/05 - "Fish-oil supplements appear to have much lower levels of toxins than fish. In a study of 5 over the-counter fish-oil preparations, levels of PCBs and organochlorines were below the detectable limit in all of the supplements ... Because consumption of this amount of fish in secondary prevention is difficult for most individuals, dietary supplementation is generally needed and should be recommended. The dose in secondary prevention should be at least 875 mg of EPA + DHA per day. This dose can generally be obtained by taking 2 capsules of concentrated fish oils (at least 50% EPA + DHA) per day. For example, such a preparation would contain 500 mg of EPA + DHA per each 1000-mg fish-oil capsule"</p><p><a href="http://www.powerpak.com/index.asp?show=lesson&lsn_id=1861&page=courses/1861/lesson.htm" target="_blank"> Omega 3: Implications in Human Health and Disease</a> - PowerPak.com - "It should be noted, however, that flaxseed or flaxseed oil does not contain EPA or DHA. Thus flaxseed and fish oil are not interchangeable sources of omega 3 fatty acids per se" - I believe the same holds true for canola oil - Ben</p><p><a href="http://www.powerpak.com/index.asp?show=lesson&lsn_id=1861&page=courses/1861/lesson.htm" target="_blank"> Omega 3: Implications in Human Health and Disease</a> -PowerPak.com -"The <a href="http://qualitycounts.com/fpomega6_linoleic_acid.htm" target="_blank"> omega 6 LA</a> comprises 7% to 9% of our daily caloric intake, while the <a href="http://qualitycounts.com/fpfattyacids.html" target="_blank"> omega 3</a> LNA makes up about 0.7% of energy. It is therefore estimated that the dietary ratio of LA to LNA ranges from 10 to 20:1, at which level the metabolism of LNA is strongly suppressed. Again, this is far more than the recommended ratio of 2.3:1 ... From an evolutionary perspective, a significant change in the diet has occurred in a very short time. The diet of our ancestors in the Paleolithic period (400,000 to 45,000 years ago) was lower in fat and balanced in omega 6 and omega 3—a ratio of 1:1, or 10- to 20-fold lower than today's standard."</p></blockquote><p></p>
[QUOTE="Vince, post: 27238, member: 843"] General Information: [URL="http://www.powerpak.com/index.asp?show=lesson&page=courses/105467/lesson.htm&lsn_id=105467"] An Evidence-Based Medicine Approach to the Appropriate Selection of Supplementation with Omega-3 Fatty[/URL] - PowerPak.com, 6/1/07 - "Fish oils EPA and DHA appear to result in different physiologic effects than their precursor, the plant-derived ALA.12-14 Biosynthesis of EPA or DHA from ALA is limited. Although dietary consumption of ALA alone will prevent EFA deficiency, emerging scientific evidence indicates that for optimum health or body function, the fish oils EPA and DHA should also be ingested regularly, either from dietary or supplement sources. Use of ALA supplementation alone, even with high dose or long-term consumption, does not result in lowered triglyceride concentrations seen with EPA or DHA, nor does it demonstrate similar in vitro susceptibility to oxidation of LDL cholesterol" [URL="http://www.jhasim.com/files/articlefiles/pdf/ASIM_Issue_5_6A_p511_517.pdf"] The Heart-Healthy Benifits of Omega-3 Fatty Acids[/URL] - John Hopkins University School of Medicine, 6/05 - "Fish-oil supplements appear to have much lower levels of toxins than fish. In a study of 5 over the-counter fish-oil preparations, levels of PCBs and organochlorines were below the detectable limit in all of the supplements ... Because consumption of this amount of fish in secondary prevention is difficult for most individuals, dietary supplementation is generally needed and should be recommended. The dose in secondary prevention should be at least 875 mg of EPA + DHA per day. This dose can generally be obtained by taking 2 capsules of concentrated fish oils (at least 50% EPA + DHA) per day. For example, such a preparation would contain 500 mg of EPA + DHA per each 1000-mg fish-oil capsule" [URL="http://www.powerpak.com/index.asp?show=lesson&lsn_id=1861&page=courses/1861/lesson.htm"] Omega 3: Implications in Human Health and Disease[/URL] - PowerPak.com - "It should be noted, however, that flaxseed or flaxseed oil does not contain EPA or DHA. Thus flaxseed and fish oil are not interchangeable sources of omega 3 fatty acids per se" - I believe the same holds true for canola oil - Ben [URL="http://www.powerpak.com/index.asp?show=lesson&lsn_id=1861&page=courses/1861/lesson.htm"] Omega 3: Implications in Human Health and Disease[/URL] -PowerPak.com -"The [URL="http://qualitycounts.com/fpomega6_linoleic_acid.htm"] omega 6 LA[/URL] comprises 7% to 9% of our daily caloric intake, while the [URL="http://qualitycounts.com/fpfattyacids.html"] omega 3[/URL] LNA makes up about 0.7% of energy. It is therefore estimated that the dietary ratio of LA to LNA ranges from 10 to 20:1, at which level the metabolism of LNA is strongly suppressed. Again, this is far more than the recommended ratio of 2.3:1 ... From an evolutionary perspective, a significant change in the diet has occurred in a very short time. The diet of our ancestors in the Paleolithic period (400,000 to 45,000 years ago) was lower in fat and balanced in omega 6 and omega 3—a ratio of 1:1, or 10- to 20-fold lower than today's standard." [/QUOTE]
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