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Metabolic effects of weight reduction of very low energy diet vs dietary counseling

ABSTRACT: The goal of the study is to assess the relative efficacy of a very low energy diet (VLED) using liquid meal replacement vs. standard of care dietary counseling and education (DCE) on the metabolic effects of weight reduction in the obese, subfertile population and assess ovulation and time to conception in these women. Subfertile women were recruited for this study. They completed an OGTT at baseline and again after completing a very low energy diet intervention.

ORGANISM(S): Human Homo Sapiens

SUBMITTER: Maureen Kachman

PROVIDER: ST000708 | MetabolomicsWorkbench | Mon Jun 19 00:00:00 BST 2017

REPOSITORIES: MetabolomicsWorkbench

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Project description:Background: Despite the established relation between energy restriction and metabolic health, the most beneficial nutrient composition of a weight-loss diet is still subject of debate. Objectives: The aim of the study was to examine the additional effects of nutrient quality on top of energy restriction(ER). Methods: A parallel-designed 12-week 25%ER dietary intervention study was conducted. Participants aged 40-70 years with abdominal obesity were randomized over three groups: a 25%ER high nutrient quality diet (n = 40); a 25%ER low nutrient quality diet (n = 40); or a habitual diet (n = 30). Both ER diets were nutritionally adequate, the high nutrient quality ER diet was enriched in monounsaturated and n-3 polyunsaturated fatty acids, fiber, and plant protein and reduced in fructose. Before and after the intervention intra-hepatic lipids, body fat distribution, fasting and postprandial responses to a mixed meal shake challenge test of cardio-metabolic risk factors, lipoproteins, vascular measurements, and adipose tissue transcriptome were assessed. Results: The high quality ER diet (-8.4 ± 3.2) induced 2.1 kg more weight loss (P = 0.007) than the low quality ER diet (-6.3 ± 3.9), reduced fasting serum total cholesterol (P = 0.014) and plasma triglycerides (P < 0.001), promoted an anti-atherogenic lipoprotein profile and induced a more pronounced decrease in adipose tissue gene expression of energy metabolism pathways than the low quality ER diet. Explorative analyses showed that the difference in weight loss between both ER diets were specifically present in insulin sensitive subjects (HOMA-IR ≤ 2.5), in whom the high nutrient quality diet induced 3.9 kg more weight loss than the low nutrient quality diet. Conclusion: A high nutrient quality 25%ER diet is more beneficial for cardiometabolic health than a low nutrient quality 25%ER diet. Overweight insulin sensitive subjects may benefit more from a high than a low nutrient quality ER diet with respect to weight loss, due to potential attenuation of glucose-induced lipid synthesis in adipose tissue. Trial registration: ClinicalTrials.gov NCT02194504.

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Metabolic effects of weight reduction of very low energy diet vs dietary counseling

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