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ARTICLE |

Clinical Applications of Fish Oils FREE

Jack Zeev Yetiv, MD, PhD
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JAMA. 1988;260(5):665-670. doi:10.1001/jama.1988.03410050085035
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Fish oil supplements are currently being nationally advertised, and many physicians are being queried about their clinical utility. Epidemiologic studies reveal a low incidence of cardiovascular disease in people, such as the Eskimos, who eat large amounts of seafood. Cardiovascular health may be improved because fish and fish oil supplements lower plasma lipid levels (especially triglycerides), inhibit platelet aggregation, and may decrease blood pressure and viscosity and increase high-density lipoprotein (HDL) levels. Preliminary observations also suggest a potential future role for fish oils in the treatment of some autoimmune diseases, such as atopic dermatitis, psoriasis, and rheumatoid arthritis. Patients with serum triglyceride levels greater than 5.64 mmol/L and/or cholesterol levels greater than 7.75 mmol/L refractory to dietary management may benefit from a medically supervised trial of fish oil supplements. Data currently available are insufficient to recommend fish oil supplements for the general public, or for patients with other diseases, and side effects must also be considered. These include occasional adverse lipid changes, potential for bleeding and vitamin E deficiency, and, with some preparations, vitamin A and D toxicity.

(JAMA 1988;260:665-670)

REFERENCES

Gunby P:  It's not fishy: Fruit of the sea may foil cardiovascular disease . JAMA 1982;;247:729-731.
Harris WS:  Health effects of omega-3 fatty acids . Contemp Nutr 1985;;10:1-2.
Goodnight SH, Harris WS, Connor WE, et al:  Polyunsaturated fatty acids, hyperlipidemia, and thrombosis . Arteriosclerosis 1982;;2:87-113.
Walker ARP:  Fish, fish oils and coronary heart disease . S Afr Med J 1985;;68:1-2.
Neutze JM, Starling MB:  Fish oils and coronary heart disease . NZ Med J 1986;;99:581-583.
Herrold PM, Kinsella JE:  Fish oil consumption and decreased risk of cardiovascular disease: A comparison of findings from animal and human feeding trials . Am J Clin Nutr 1986;;43:566-598.
Von Schacky C:  Prophylaxis of atherosclerosis with marine omega-3 fatty acids: A comprehensive strategy . Ann Intern Med 1987;;107:890-899.
Leaf A, Weber PC:  Cardiovascular effects of n-3 fatty acids . N Engl J Med 1988;;318:549-557.
 Eskimo diets and diseases , editorial. Lancet 1983;;1:1139-1141.
Arthaud JB:  Cause of death in 339 Alaskan natives as determined by autopsy . Arch Pathol Lab Med 1970;;90:433-438.
Kromhout D, Bosschieter EB, Coulander CL:  The inverse relation between fish consumption and 20-year mortality from heart disease . N Engl J Med 1985;;312:1205-1209.
Shekelle RB, Paul 0, Shryock AM, et al:  Fish consumption and mortality from coronary heart disease . N Engl J Med 1985;;313:820.
Norell SE, Ahlbom A, Feychting M, et al:  Fish consumption and mortality from coronary heart disease . Br Med J 1986;;293:426.
Vollset SE, Heuch I, Bjelke E:  Fish consumption and mortality from coronary heart disease . N Engl J Med 1985;;313:820-821.
Curb JD, Reed DM:  Fish consumption and mortality from coronary heart disease . N Engl J Med 1985;;313:821.
Kromann N, Green A:  Epidemiological studies in the Upernavik district, Greenland . Acta Med Scand 1980;;208:401-406.
Hamberg M, Svensson J, Samuelsson B:  Thromboxanes: A new group of biologically active compounds derived from prostaglandin endoperoxides . Proc Nat Acad Sci USA 1975;;72:2994-2998.
Moncada S, Higgs EA, Vane JR:  Human arterial and venous tissues generate prostacyclin (prostaglandin X), a potent inhibitor of platelet aggregation . Lancet 1977;;1:18-21.
Vane JR:  Prostaglandins and the cardiovascular system . Br Heart J 1983;;49:405-409.
Imaichi K, Michaels GD, Gunning B, et al:  Studies with the use of fish oil fractions in human subjects . Am J Clin Nutr 1963;;13:158-168.
Hamazaki T, Nakazawa R, Tateno S, et al:  Effects of fish oil rich in eicosapentaenoic acid on serum lipid in hyperlipidemic hemodialysis patients . Kidney Int 1984;;26:81-84.
Singer P, Wirth M, Berger I, et al:  Influence in serum lipids, lipoproteins and blood pressure of mackerel and herring diet in patients with type IV and V hyperlipoproteinemia . Atherosclerosis 1985;;56:111-116.
Simons LA, Hickie JB, Balasubramaniam S:  On the effects of dietary n-3 fatty acids (Maxepa) on plasma lipids and lipoproteins in patients with hyperlipidemia . Atherosclerosis 1985;;54:75-88.
Raz A, Minkes MS, Needleman P:  Endoperoxides and thromboxanes: Structural determinants for platelet aggregation and vasoconstriction . Biochim Biophys Acta 1977;;488:305-311.
Needleman P, Raz A, Minkes M, et al:  Triene prostaglandins: Prostacyclin and thromboxane biosynthesis and unique biological properties . Proc Natl Acad Sci USA 1979;;76:944-948.
Samuelsson B:  Leukotrienes: Mediators of immediate hypersensitivity reactions and inflammation . Science 1983;;220:568-575.
Mullane KM, Salmon JA, Kraemer R:  Leukocyte-derived metabolites of arachidonic acid in ischemia-induced myocardial injury . Fed Proc 1987;;46:2422-2433.
Terano T, Salmon JA, Moncada S:  Biosynthesis and biological activity of leukotriene B5 . Prostaglandins 1984;;27:217-232.
Strasser TH, Fischer S, Weber PC:  Leukotriene B5 is formed in human neutrophils after dietary supplementation with eicosapentaenoic acid . Proc Natl Acad Sci USA 1985;;82:1540-1543.
Hilditch TP: The Chemical Constitution of Natural Fats , ed 3. New York, John Wiley & Sons Inc, 1956;, pp 376-377,402.
Bronte-Stewart B, Antonis A, Easles L, et al:  Effects of feeding different fats on serum cholesterol levels . Lancet 1956;;1:521-526.
Keys A, Anderson JT, Grande F:  `Essential' fatty acids, degree of unsaturation and effects of corn (maize) oil on the serum cholesterol level in man . Lancet 1957;;1:66-68.
Saynor R, Verel D, Gillott T:  The long-term effect of dietary supplementation with fish lipid concentrate on serum lipids, bleeding time, platelets and angina . Atherosclerosis 1984;;50:3-10.
Saynor R:  Effects of ω-3 fatty acids on serum lipids . Lancet 1984;;2:696-697.
Nestel PJ, Connor WE, Reardon MF, et al:  Suppression by diets rich in fish oil of very low density lipoprotein production in man . J Clin Invest 1984;;74:82-89.
Sanders TAB, Sullivan DR, Reeve J, et al:  Triglyceride-lowering effect of marine polyunsaturates in patients with hypertriglyceridemia . Arteriosclerosis 1985;;5:459-465.
Nestel PJ:  Fish oil attenuates the cholesterol induced rise in lipoprotein cholesterol . Am J Clin Nutr 1986;;43:752-757.
Hatcher LF, Connor WE, Ullman DO, et al:  Dietary fish oil in familial hypercholesterolemia: Response to added cholesterol , abstracted. Am J Clin Nutr 1987;;44:858.
Von Lossonczy TO, Ruiter A, Bronsgeest-Schoute HC, et al:  The effect of a fish diet on serum lipids in healthy human subjects . Am J Clin Nutr 1978;;31:1340-1346.
Harris WS, Connor WE:  The effects of salmon oil upon plasma lipids, lipoproteins, and triglyceride clearance . Trans Assoc Am Physicians 1980;;93:148-155.
Harris WS, Connor WE, Goodnight SH:  Dietary fish oils, plasma lipids and platelets in man . Prog Lipid Res 1981;;20:75-79.
Harris WS, Connor WE, McMurry MP:  The comparative reductions of the plasma lipids and lipoproteins by dietary polyunsaturated fats: Salmon oil versus vegetable oils . Metabolism 1983;;32:179-184.
Illingworth DR, Harris WS, Connor WE:  Inhibition of low density lipoprotein synthesis by dietary omega-3 fatty acids in humans . Arteriosclerosis 1984;;4:270-275.
Harris WS, Connor WE, Inkeles SB, et al:  Dietary omega-3 fatty acids prevent carbohydrate-induced hyperriglyceridemia . Metabolism 1984;; 33:1016-1019.
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Srivastava KC:  Docosahexaenoic acid (C22:6ω3) and linoleic acid are anti-aggregatory and alter arachidonic acid metabolism in human platelets . Prostaglandins Leukotrienes Med 1985;;17:319-327.
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Croft KD, Beilin LJ, Vandongen R:  The effect of dietary fish oil on platelet metabolism of 14C arachidonic acid . Thromb Res 1986;;42:99-104.
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Galloway JH, Cartwright IJ, Woodcock BE, et al:  Effects of dietary fish oil supplementation on the fatty acid composition of the human platelet membrane: Demonstration of selectivity in the incorporation of eicosapentaenoic acid into membrane phospholipid pools . Clin Sci 1985;;68:449-454.
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Prickett JD, Robinson DR, Steinberg AD:  Dietary enrichment with the polyunsaturated fatty acid eicosapentaenoic acid prevents proteinuria and prolongs survival in NZB X NZW Fl mice . J Clin Invest 1981;;68:556-559.
Prickett JD, Robinson DR, Steinberg AD:  Effects of dietary enrichment with eicosapentaenoic acid upon autoimmune nephritis in female NZB NZW/F1 mice . Arthritis Rheum 1983;;26:133-139.
Robinson DR, Prickett JD, Makoul GT, et al:  Dietary fish oil reduces progression of established renal disease in (NZB X NZW)F1 mice and delays renal disease in BXSB and MRL/1 strains . Arthritis Rheum 1986;;29:539-546.
Kelley VE, Ferretti A, Izui S, et al:  A fish oil diet rich in eicosapentaenoic acid reduces cyclooxygenase metabolites and suppresses lupus in MRL-1pr mice . J Immunol 1985;;134:1914-1919.
Robinson DR, Prickett JD, Polisson R, et al:  The protective effect of dietary fish oil on murine lupus . Prostaglandins 1985;;30:51-75.
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 Fish oils in rheumatoid arthritis , editorial. Lancet 1987;;2:720-721.
Bittiner SB, Cartwright I, Tucker WFG, et al:  A double-blind, randomized placebo-controlled trial of fish oil in psoriasis . Lancet 1988;;1:378-380.
Ziboh VA, Cohen KA, Ellis CN, et al:  Effects of dietary supplementation of fish oil on neutrophils and epidermal fatty acids: Modulation of clinical course of psoriatic subjects . Arch Dermatol 1986;;122:1277-1282.
Bjorneboe A, Soyland E, Bjorneboe GEA, et al:  Effect of dietary supplementation with eicosapentaenoic acid in the treatment of atopic dermatitis . Br J Dermatol 1987;;117:463-469.
Lee TH, Israel E, Drazen JM, et al:  Enhancement of plasma levels of biologically active leukotriene B compounds during anaphylaxis in guinea pigs pretreated by indomethacin or by a fish oil-enriched diet . J Immunol 1986;;136:2575-2582.
Lee TH, Austen KF, Lietch AG, et al:  The effects of a fish-oil-enriched diet on pulmonary mechanics during anaphylaxis . Am Rev Respir Dis 1985;;132:1204-1209.
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Karmali RA, Marsh J, Fuchs C:  Effect of omega-3 fatty acids on growth of a rat mammary tumor . JNCI 1984;;73:451-461.
Szeluga DJ, Bistrian BR, Mascioli EA:  Fish oil slows tumor growth and prolongs survival in a transplantable metastatic breast cancer model , abstracted. Am J Clin Nutr 1987;;45:859.
O'Connor TP, Roebuck BD, Peterson F, et al:  Effect of dietary intake of fish oil and fish protein on the development of L-azaserine-induced preneoplastic lesions in rat pancreas . JNCI 1985;;75: 959-962.
Schaumburg H, Kaplan J, Windebank A, et al:  Sensory neuropathy from pyridoxine abuse: A new megavitamin syndrome . N Engl J Med 1983;; 309:445-448.
Baird MB, Hough JL:  More on fish oil .NEngl J Med 1987;;316:626.
Ruiter A, Jongbloed AW, van Gent CM, et al:  The influence of dietary mackerel oil on the condition of organs and on the blood lipid composition in the young growing pig . Am J Clin Nutr 1978;; 31:2159-2166.
Gudbjarnason S, Hallgrimsson J:  The role of myocardial membrane lipids in the development of cardiac necrosis . Acta Med Scand Suppl 1976;;587:17-27.
Weiner BH, Ockene IS, Levine PH, et al:  Inhibition of atherosclerosis by cod-liver oil in a hyperlipidemic swine model . N Engl J Med 1986;;315:841-846.
Davis HR, Bridenstine RT, Vesselinovitch D, et al:  Fish oil inhibits development of atherosclerosis in rhesus monkeys . Arteriosclerosis 1987;;7: 441-449.
Hollander W, Hong S, Kirkpatrick BJ, et al:  Differential effects of fish oil suppplements on atherosclerosis . Circulation 1987;;76( (suppl 4) ):1245.
Connor WE, Lin DS:  The effect of shellfish in the diet upon the plasma lipid levels in humans . Metabolism 1982;;31:1046-1051.
Rosa FW, Wilk AL, Kelsey FO:  Teratogen update: Vitamin A congeners . Teratology 1986;;33:355-364.
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Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Gunby P:  It's not fishy: Fruit of the sea may foil cardiovascular disease . JAMA 1982;;247:729-731.
Harris WS:  Health effects of omega-3 fatty acids . Contemp Nutr 1985;;10:1-2.
Goodnight SH, Harris WS, Connor WE, et al:  Polyunsaturated fatty acids, hyperlipidemia, and thrombosis . Arteriosclerosis 1982;;2:87-113.
Walker ARP:  Fish, fish oils and coronary heart disease . S Afr Med J 1985;;68:1-2.
Neutze JM, Starling MB:  Fish oils and coronary heart disease . NZ Med J 1986;;99:581-583.
Herrold PM, Kinsella JE:  Fish oil consumption and decreased risk of cardiovascular disease: A comparison of findings from animal and human feeding trials . Am J Clin Nutr 1986;;43:566-598.
Von Schacky C:  Prophylaxis of atherosclerosis with marine omega-3 fatty acids: A comprehensive strategy . Ann Intern Med 1987;;107:890-899.
Leaf A, Weber PC:  Cardiovascular effects of n-3 fatty acids . N Engl J Med 1988;;318:549-557.
 Eskimo diets and diseases , editorial. Lancet 1983;;1:1139-1141.
Arthaud JB:  Cause of death in 339 Alaskan natives as determined by autopsy . Arch Pathol Lab Med 1970;;90:433-438.
Kromhout D, Bosschieter EB, Coulander CL:  The inverse relation between fish consumption and 20-year mortality from heart disease . N Engl J Med 1985;;312:1205-1209.
Shekelle RB, Paul 0, Shryock AM, et al:  Fish consumption and mortality from coronary heart disease . N Engl J Med 1985;;313:820.
Norell SE, Ahlbom A, Feychting M, et al:  Fish consumption and mortality from coronary heart disease . Br Med J 1986;;293:426.
Vollset SE, Heuch I, Bjelke E:  Fish consumption and mortality from coronary heart disease . N Engl J Med 1985;;313:820-821.
Curb JD, Reed DM:  Fish consumption and mortality from coronary heart disease . N Engl J Med 1985;;313:821.
Kromann N, Green A:  Epidemiological studies in the Upernavik district, Greenland . Acta Med Scand 1980;;208:401-406.
Hamberg M, Svensson J, Samuelsson B:  Thromboxanes: A new group of biologically active compounds derived from prostaglandin endoperoxides . Proc Nat Acad Sci USA 1975;;72:2994-2998.
Moncada S, Higgs EA, Vane JR:  Human arterial and venous tissues generate prostacyclin (prostaglandin X), a potent inhibitor of platelet aggregation . Lancet 1977;;1:18-21.
Vane JR:  Prostaglandins and the cardiovascular system . Br Heart J 1983;;49:405-409.
Imaichi K, Michaels GD, Gunning B, et al:  Studies with the use of fish oil fractions in human subjects . Am J Clin Nutr 1963;;13:158-168.
Hamazaki T, Nakazawa R, Tateno S, et al:  Effects of fish oil rich in eicosapentaenoic acid on serum lipid in hyperlipidemic hemodialysis patients . Kidney Int 1984;;26:81-84.
Singer P, Wirth M, Berger I, et al:  Influence in serum lipids, lipoproteins and blood pressure of mackerel and herring diet in patients with type IV and V hyperlipoproteinemia . Atherosclerosis 1985;;56:111-116.
Simons LA, Hickie JB, Balasubramaniam S:  On the effects of dietary n-3 fatty acids (Maxepa) on plasma lipids and lipoproteins in patients with hyperlipidemia . Atherosclerosis 1985;;54:75-88.
Raz A, Minkes MS, Needleman P:  Endoperoxides and thromboxanes: Structural determinants for platelet aggregation and vasoconstriction . Biochim Biophys Acta 1977;;488:305-311.
Needleman P, Raz A, Minkes M, et al:  Triene prostaglandins: Prostacyclin and thromboxane biosynthesis and unique biological properties . Proc Natl Acad Sci USA 1979;;76:944-948.
Samuelsson B:  Leukotrienes: Mediators of immediate hypersensitivity reactions and inflammation . Science 1983;;220:568-575.
Mullane KM, Salmon JA, Kraemer R:  Leukocyte-derived metabolites of arachidonic acid in ischemia-induced myocardial injury . Fed Proc 1987;;46:2422-2433.
Terano T, Salmon JA, Moncada S:  Biosynthesis and biological activity of leukotriene B5 . Prostaglandins 1984;;27:217-232.
Strasser TH, Fischer S, Weber PC:  Leukotriene B5 is formed in human neutrophils after dietary supplementation with eicosapentaenoic acid . Proc Natl Acad Sci USA 1985;;82:1540-1543.
Hilditch TP: The Chemical Constitution of Natural Fats , ed 3. New York, John Wiley & Sons Inc, 1956;, pp 376-377,402.
Bronte-Stewart B, Antonis A, Easles L, et al:  Effects of feeding different fats on serum cholesterol levels . Lancet 1956;;1:521-526.
Keys A, Anderson JT, Grande F:  `Essential' fatty acids, degree of unsaturation and effects of corn (maize) oil on the serum cholesterol level in man . Lancet 1957;;1:66-68.
Saynor R, Verel D, Gillott T:  The long-term effect of dietary supplementation with fish lipid concentrate on serum lipids, bleeding time, platelets and angina . Atherosclerosis 1984;;50:3-10.
Saynor R:  Effects of ω-3 fatty acids on serum lipids . Lancet 1984;;2:696-697.
Nestel PJ, Connor WE, Reardon MF, et al:  Suppression by diets rich in fish oil of very low density lipoprotein production in man . J Clin Invest 1984;;74:82-89.
Sanders TAB, Sullivan DR, Reeve J, et al:  Triglyceride-lowering effect of marine polyunsaturates in patients with hypertriglyceridemia . Arteriosclerosis 1985;;5:459-465.
Nestel PJ:  Fish oil attenuates the cholesterol induced rise in lipoprotein cholesterol . Am J Clin Nutr 1986;;43:752-757.
Hatcher LF, Connor WE, Ullman DO, et al:  Dietary fish oil in familial hypercholesterolemia: Response to added cholesterol , abstracted. Am J Clin Nutr 1987;;44:858.
Von Lossonczy TO, Ruiter A, Bronsgeest-Schoute HC, et al:  The effect of a fish diet on serum lipids in healthy human subjects . Am J Clin Nutr 1978;;31:1340-1346.
Harris WS, Connor WE:  The effects of salmon oil upon plasma lipids, lipoproteins, and triglyceride clearance . Trans Assoc Am Physicians 1980;;93:148-155.
Harris WS, Connor WE, Goodnight SH:  Dietary fish oils, plasma lipids and platelets in man . Prog Lipid Res 1981;;20:75-79.
Harris WS, Connor WE, McMurry MP:  The comparative reductions of the plasma lipids and lipoproteins by dietary polyunsaturated fats: Salmon oil versus vegetable oils . Metabolism 1983;;32:179-184.
Illingworth DR, Harris WS, Connor WE:  Inhibition of low density lipoprotein synthesis by dietary omega-3 fatty acids in humans . Arteriosclerosis 1984;;4:270-275.
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Cartwright IJ, Pockley AG, Galloway JH, et al:  The effects of dietary w3 polyunsaturated fatty acids on erythrocyte membrane phospholipids, erythrocyte deformability and blood viscosity in healthy volunteers . Atherosclerosis 1985;;55: 267-281.
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To understand the clinical management of acute heart failure syndromes.
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