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Extra virgin olive oil use is associated with improved post-prandial blood glucose and LDL cholesterol in healthy subjects.

Abstract：

OBJECTIVES:Extra virgin olive oil (EVOO) is a key component of the Mediterranean diet and seems to account for the protective effect against cardiovascular disease. However, the underlying mechanism is still elusive. DESIGN:We tested the effect of EVOO, added to Mediterranean-type meal, on post-prandial glycemic and lipid profile. SUBJECTS:Post-prandial glycemic and lipid profile were investigated in 25 healthy subjects who were randomly allocated in a cross-over design to a Mediterranean-type meal added with or without 10 g EVOO (first study), or Mediterranean-type meal with EVOO (10 g) or corn oil (10 g; second study). Glycemic profile, which included glucose, insulin, dipeptidyl-peptidase-4 (DPP-4) protein and activity, glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP), and lipid profile, which included, low-density lipoprotein (LDL) cholesterol (LDL-C), oxidized LDL (ox-LDL), triglycerides and high-density lipoprotein (HDL) cholesterol (HDL-C), were analyzed before and 2 h after the meal. RESULTS:In the first study, 2 h after meal, subjects who assumed a meal with EVOO had significantly lower blood glucose (P<0.001), DPP-4 protein (P<0.001) and activity (P<0.001), LDL-C (P<0.001) and ox-LDL (P<0.001) and higher insulin (P<0.05), GLP-1 (P<0.001) and GIP (P<0.05) compared with those without EVOO. The second study showed that compared with corn oil, EVOO improved both glycemic and lipid profile. Thus, a significantly smaller increase of glucose (P<0.05), DPP4 protein (P<0.001) and activity (P<0.05) and higher increase of insulin (P<0.001) and GLP-1 (P<0.001) were observed. Furthermore, compared with corn oil, EVOO showed a significantly less increase of LDL-C (P<0.05) and ox-LDL (P<0.001). CONCLUSIONS:We report for the first time that EVOO improves post-prandial glucose and LDL-C, an effect that may account for the antiatherosclerotic effect of the Mediterranean diet.

journal_name

Nutr Diabetes

journal_title

Nutrition & diabetes

authors

Violi F,Loffredo L,Pignatelli P,Angelico F,Bartimoccia S,Nocella C,Cangemi R,Petruccioli A,Monticolo R,Pastori D,Carnevale R

doi

10.1038/nutd.2015.23

subject

Has Abstract

pub_date

2015-07-20 00:00:00

pages

e172

issn

2044-4052

pii

nutd201523

journal_volume

pub_type

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Extra virgin olive oil use is associated with improved post-prandial blood glucose and LDL cholesterol in healthy subjects.