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Herbal, natural, integrative medicine  & health. Scuola Viterbese di Fitoterapia - Italia
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Bioavailability and Potential Uses of Vegetarian Sources of Omega-3 Fatty Acids: A Review of the Literature

Bioavailability and Potential Uses of Vegetarian Sources of Omega-3 Fatty Acids: A Review of the Literature | Vitae Herbae | Scoop.it

Presently alpha-linolenic acid (ALA) is the most widely used vegetarian LC3PUFA, but only marginal amounts are converted into eicosapentaenoic (EPA) and docosahexaenoic acid (DHA); both of which are strongly related to human health. Currently, fish oils represent the most prominent dietary sources of EPA and DHA; however, these are unsuitable for vegetarians. Alternative sources include flaxseed, echium, walnut, and algal oil but their conversion to EPA and DHA must be considered. The present systematic review sets out to collate information from intervention studies examining the bioavailability of alternative vegetarian long chain omega-3 (n-3) polyunsaturated fatty acids (LC3PUFA) sources. Ten key papers published over the last 10 years were identified with seven intervention studies reporting that ALA from nut and seed oils was not converted to DHA at all. Three studies showed that ingestion of micro-algae oil led to significant increases in blood erythrocyte and plasma DHA. Further work is now needed to identify optimal doses of alternative vegetarian LC3PUFAs and how these can be integrated within daily diets. The potential role of algal oils appears to be particularly promising and an area in which further research is warranted


Via Jonathan Middleton
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» Omega 3 Strongly Linked to Behavior, Learning in Children - Psych Central News

» Omega 3 Strongly Linked to Behavior, Learning in Children - Psych Central News | Vitae Herbae | Scoop.it
Researchers at the University of Oxford have found that a child’s blood levels of long-chain Omega-3 DHA can significantly predict how well he or she is able (Omega 3 Strongly Linked to Behavior, Learning in Children
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Omega-3 fatty acids: a review of the effects on adiponectin and leptin and potential implications for obesity management. [Eur J Clin Nutr. 2013] - PubMed - NCBI

Abstract

An increase in adiposity is associated with altered levels of biologically active proteins. These include the hormones adiponectin and leptin. The marked change in circulating concentrations of these hormones in obesity has been associated with the development of insulin resistance and metabolic syndrome. Variations in dietary lipid consumption have also been shown to impact obesity. Specifically, omega-3 fatty acids have been correlated with the prevention of obesity and subsequent development of chronic disease sequalae. This review explores animal and human data relating to the effects of omega-3 fatty acids (marine lipids) on adiponectin and leptin, considering plausible mechanisms and potential implications for obesity management. Current evidence suggests a positive, dose-dependent relationship between omega-3 fatty acid intake and circulating levels of adiponectin. In obese subjects, this may translate into a reduced risk of developing cardiovascular disease, metabolic syndrome and diabetes. In non-obese subjects, omega-3 is observed to decrease circulating levels of leptin; however, omega-3-associated increases in leptin levels have been observed in obese subjects. This may pose benefits in the prevention of weight regain in these subjects following calorie restriction

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omega-3 fatty acids have been correlated with the prevention of obesity and subsequent development of chronic disease sequalae, they increase circulating levels of adiponectin and decrease leptin levels

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