Abstract

Background: Trans fatty acids are considered to impair health and some ω fatty acids are protective against atherosclerosis and diabetes mellitus. Trans fatty acids are said to be formed by the partial hydrogenation of vegetable oils. Some amounts are produced in digestive organs of ruminants and present in dairy products or meat. It is important how much these intaken fatty acids influence their plasma levels. Methods: Plasma levels of fatty acids including transforms of healthy old men are measured by gas chromatography and correlations between various foods intakes and plasma levels of trans fatty acids, and ω fatty acids are examined. Results: Intake of fish resulted in increase in plasma levels of docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) but intake of meat such as beef, cow and chicken meat did not increase plasma levels of arachidonic acid (AA). Intakes of oils increased plasma levels of dihomo-g-linolenic acid significantly and AA to some extent. Conclusion: Plasma levels of EPA and DHA increased upon intakes of fish in Japanese old men. Oil intake but not meat intake increased DGLA significantly. These results may explain low incidence of cardiovascular diseases in Japanese people compared with American people whose plasma levels of DHA and EPA are lower.

Highlights

  • The Global Burden of Disease about overweight and obesity and morbidity and mortality showed that the prevalence of obesity is 12% world-widely [1]

  • Since ω fatty acids are very important for health and plasma levels of docosahexanoic acid (DHA) and eicosapentaenoic acid (EPA) are higher in healthy Japanese old men than American old men; we wanted to know what kinds of foods influence plasma levels of these fatty acids

  • Intakes of oils increased plasma levels of dihomo-g-linolenic acid (DGLA) which is converted to arachidonic acid (AA)

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Summary

Introduction

The Global Burden of Disease about overweight and obesity and morbidity and mortality showed that the prevalence of obesity is 12% world-widely [1]. Trans fatty acids, unsaturated fatty acids with at least one double bond in the transform, are formed during the partial hydrogenation of vegetable oils. This process changes vegetable oils to semisolid fats, which can be used in margarines and commercial cooking. Since ω fatty acids are very important for health and plasma levels of docosahexanoic acid (DHA) and eicosapentaenoic acid (EPA) are higher in healthy Japanese old men than American old men; we wanted to know what kinds of foods influence plasma levels of these fatty acids. We wanted to know how foods intake contributes plasma levels of trans and ω fatty acids

Participants
Analyses of Plasma Samples
Studies of Foods Intakes
Results
Discussion
Ethics
Statistics

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