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Effect of flax and hemp seed oils on erythrocyte concentrations of eicosapentaenoic and docosahexaenoic acids in vegetarians

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Item Summary

Title: Effect of flax and hemp seed oils on erythrocyte concentrations of eicosapentaenoic and docosahexaenoic acids in vegetarians
Authors: Johnson, Jeffrey Brian
Advisor: Dooley, Dian
Issue Date: Dec 2003
Publisher: University of Hawaii at Manoa
Abstract: Flax and hemp seed oils are rich sources of alpha-linolenic acid (ALA; 18:3n-3), which can be converted to eicosapentaenoic acid (EPA; 20:5n-3) and docosahexaenoic acid (DHA; 22:6n-3) in humans. We investigated the effects of these oils on erythrocyte concentrations of EPA, DHA, other fatty acids, and plasma lipids in healthy vegetarians. Twenty-two subjects consumed either one tablespoon of flax (7.1 g ALA) or hemp seed oil (2.2 g ALA) daily for twenty-eight days. Diet records were collected at baseline and during supplementation. Blood samples were collected at baseline and post-supplementation. No significant increases in plasma EPA, DHA or dihomo-gamma-linolenic acid (DGLA; 18:3n-6) were observed in either group. Significant increases in plasma high-density lipoprotein cholesterol (HDL) concentrations were observed in both groups. Flax and hemp seed oils were not effective at increasing erythrocyte EPA, DHA or DGLA concentrations but were effective at increasing HDL concentrations.
Description: xv, 114 leaves
URI/DOI: http://hdl.handle.net/10125/7037
Rights: All UHM dissertations and theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission from the copyright owner.
Appears in Collections:M.S. - Nutritional Sciences



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