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 ) .
Does regular walnut consumption lead to weight gain?
Studies consistently show the beneficial effects of eating nuts , but as high-energy foods , their regular consumption may lead to weight gain . We tested if daily consumption of walnuts ( approximately 12 % energy intake ) for 6 months would modify body weight and body composition in free-living subjects . Ninety participants in a 12-month r and omized cross-over trial were instructed to eat an allotted amount of walnuts ( 28 - 56 g ) during the walnut-supplemented diet and not to eat them during the control diet , with no further instruction . Subjects were unaware that body weight was the main outcome . Dietary compliance was about 95 % and mean daily walnut consumption was 35 g during the walnut-supplemented diet . The walnut-supplemented diet result ed in greater daily energy intake ( 557 kJ ( 133 kcal ) ) , which should theoretically have led to a weight gain of 3.1 kg over the 6-month period . For all participants , walnut supplementation increased weight ( 0.4 ( se 0.1 ) kg ) , BMI ( 0.2 ( se 0.1 ) kg/m(2 ) ) , fat mass ( 0.2 ( se 0.1 ) kg ) and lean mass ( 0.2 ( se 0.1 ) kg ) . But , after adjusting for energy differences between the control and walnut-supplemented diets , no significant differences were observed in body weight or body composition parameters , except for BMI ( 0.1 ( se 0.1 ) kg/m(2 ) ) . The weight gain from incorporating walnuts into the diet ( control-->walnut sequence ) was less than the weight loss from withdrawing walnuts from the diet ( walnut-->control sequence ) . Our findings show that regular walnut intake result ed in weight gain much lower than expected and which became non-significant after controlling for differences in energy intake
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 ) .