There was no effect on waist circumference , high-density lipoprotein cholesterol or blood pressure with the direction of effect favouring tree nuts for waist circumference .
Pooled analyses show a MetS benefit of tree nuts through modest decreases in triglycerides and fasting blood glucose with no adverse effects on other criteria across nut types .
OBJECTIVE To provide a broader evidence summary to inform dietary guidelines of the effect of tree nuts on criteria of the metabolic syndrome ( MetS ) .
Effects of Walnuts on Endothelial Function in Overweight Adults with Visceral Obesity: A Randomized, Controlled, Crossover Trial
Objectives : Metabolic syndrome is a precursor of diabetes and cardiovascular disease ( CVD ) . Walnut ingestion has been shown to reduce CVD risk indices in diabetes . This r and omized controlled crossover trial was performed to investigate the effects of daily walnut consumption on endothelial function and other biomarkers of cardiac risk in a population of overweight individuals with visceral adiposity . Methods : Forty-six overweight adults ( average age , 57.4 years ; 28 women , 18 men ) with elevated waist circumference and 1 or more additional signs of metabolic syndrome were r and omly assigned to two 8-week sequences of walnut-enriched ad libitum diet and ad libitum diet without walnuts , which were separated by a 4-week washout period . The primary outcome measure was the change in flow-mediated vasodilation ( FMD ) of the brachial artery . Secondary measures included serum lipid panel , fasting glucose and insulin , Homeostasis Model Assessment –Insulin Resistance values , blood pressure , and anthropometric measures . Results : FMD improved significantly from baseline when subjects consumed a walnut-enriched diet as compared with the control diet ( 1.4 % ± 2.4 % versus 0.3 % ± 1.5 % ; p = 0.019 ) . Beneficial trends in systolic blood pressure reduction were seen , and maintenance of the baseline anthropometric values was also observed . Other measures were unaltered . Conclusion : Daily ingestion of 56 g of walnuts improves endothelial function in overweight adults with visceral adiposity . The addition of walnuts to the diet does not lead to weight gain . Further study of the potential role of walnut intake in diabetes and CVD prevention is warranted
There was no effect on waist circumference , high-density lipoprotein cholesterol or blood pressure with the direction of effect favouring tree nuts for waist circumference .
Pooled analyses show a MetS benefit of tree nuts through modest decreases in triglycerides and fasting blood glucose with no adverse effects on other criteria across nut types .
OBJECTIVE To provide a broader evidence summary to inform dietary guidelines of the effect of tree nuts on criteria of the metabolic syndrome ( MetS ) .