Effect of a high-fiber diet vs a fiber-supplemented diet on C-reactive protein level. Dietary Patterns and Cognitive Health in Older Adults: A Systematic Review. A randomized controlled clinical trial investigating the effect of DASH diet on insulin resistance, inflammation, and oxidative stress in gestational diabetes. Effects of a DASH-like diet containing lean beef on vascular health The Dietary Approaches to Stop Hypertension eating plan affects C-reactive protein, coagulation abnormalities, and hepatic function tests among type 2 diabetic patients. DASH diet, insulin resistance, and serum hs-CRP in polycystic ovary syndrome: a randomized controlled clinical trial. Effects of the DASH diet alone and in combination with exercise and weight loss on blood pressure and cardiovascular biomarkers in men and women with high blood pressure: the ENCORE study. Determinants and consequences of adherence to the dietary approaches to stop hypertension diet in African-American and white adults with high blood pressure: results from the ENCORE trial. Does the DASH diet lower blood pressure by altering peripheral vascular function?
BACKGROUND Diets high in fiber are associated with lower levels of inflammatory markers . This study examined the reduction in inflammation from a diet supplemented with fiber compared with a diet naturally high in fiber . METHODS R and omized crossover intervention trial of 2 diets , a high-fiber ( 30-g/d ) Dietary Approaches to Stop Hypertension ( DASH ) diet or fiber-supplemented diet ( 30 g/d ) , after a baseline ( regular ) diet period of 3 weeks . There were 35 participants ( 18 lean normotensive and 17 obese hypertensive individuals ) aged 18 to 49 years . RESULTS The study included 28 women and 7 men ; 16 ( 46 % ) were black , the remainder white . The mean ( SD ) fiber intake on baseline diets was 11.9 ( 0.3 ) g/d ; on the high-fiber DASH diet , 27.7 ( 0.6 ) g/d ; and on the supplemented diet , 26.3 ( 0.4 ) g/d . Overall , the mean C-reactive protein ( CRP ) level changed from 4.4 to 3.8 mg/L ( -13.7 % ; P = .046 ) in the high-fiber DASH diet group and to 3.6 mg/L ( -18.1 % ) in the fiber-supplemented diet group ( P = .03 ) . However , CRP levels decreased in the 18 lean normotensive participants in either intervention diet group ( 2.0 mg/L [ baseline ] vs 1.4 mg/L [ high-fiber DASH ] vs 1.2 mg/L [ supplemented ] ) ; P<.05 ) but did not change significantly ( 7.1 mg/L [ baseline ] vs 6.2 mg/L [ high-fiber DASH ] vs 6.5 mg/L [ supplemented ] ; P>.05 ) in obese hypertensive participants . Neither age nor race influenced the response of CRP levels to the diets . No evidence of a crossover effect was detected . CONCLUSIONS The results demonstrate that fiber intake of about 30 g/d ) from a diet naturally rich in fiber or from a supplement can reduce levels of CRP . Further research is needed to more clearly eluci date the differential effect seen in lean vs obese individuals and whether modification of dietary fiber may be helpful in modulating inflammation and its consequent cardiovascular consequences While the role of diet and nutrition in cognitive health and prevention of dementia  in older adults has attracted much attention , the efficacy of different dietary patterns remains uncertain . Previous review s have mainly focused on the Mediterranean diet , but either omitted other dietary patterns , lacked more recent studies , were based on cross-sectional studies , or combined older and younger population s. We followed PRISMA guidelines , and examined the efficacy of current research from r and omized controlled trials and cohort studies on the effects of different dietary patterns . We review ed the Mediterranean diet , Dietary Approach to Stop Hypertension ( DASH ) diet , the Mediterranean-DASH diet Intervention for Neurodegenerative Delay ( MIND ) diet , Anti-inflammatory diet , Healthy diet recommended by guidelines via dietary index , or Prudent healthy diets generated via statistical approaches , and their impact on cognitive health among older adults . Of 38 studies , the Mediterranean diet was the most investigated with evidence supporting protection against cognitive decline among older adults . Evidence from other dietary patterns such as the MIND , DASH , Anti-inflammatory , and Prudent healthy diets was more limited but showed promising results , especially for those at risk of cardiovascular disease . Overall , this review found positive effects of dietary patterns including the Mediterranean , DASH , MIND , and Anti-inflammatory diets on cognitive health outcomes in older adults . These dietary patterns are plant-based , rich in poly- and mono-unsaturated fatty acids with lower consumption of processed foods . Better underst and ing of the underlying mechanisms and effectiveness is needed to develop comprehensive and practical dietary recommendations against age-related cognitive decline among older adult OBJECTIVE To our knowledge , no reports are available indicating the effects of the dietary approaches to stop hypertension ( DASH ) eating plan on insulin resistance , inflammation , and oxidative stress among pregnant women with gestational diabetes mellitus ( GDM ) . This study was design ed to investigate the effects of the DASH diet on insulin resistance , serum high-sensitivity C-reactive protein ( hs-CRP ) and biomarkers of oxidative stress among pregnant women with GDM . METHODS This r and omized controlled clinical trial was performed with 32 pregnant women diagnosed with GDM at 24 to 28 wk gestation . Participants were r and omly assigned to consume either the control ( n = 16 ) or DASH diet ( n = 16 ) for 4 wk . The DASH diet was rich in fruits , vegetables , whole grains , and low-fat dairy products and was low in saturated fats , total fats , cholesterol , refined grains , and sweets , with a total of 2400 mg/d of sodium . The control diet contained 40 % to 55 % of its energy as carbohydrates , 10 % to 20 % as proteins , and 25 % to 30 % as total fats . Fasting blood sample s were taken at baseline and after 4 wk of intervention to measure fasting plasma glucose ( FPG ) , serum insulin , and hs-CRP , homeostasis model of assessment -insulin resistance ( HOMA-IR ) , plasma total antioxidant capacity ( TAC ) , and total glutathione levels ( GSH ) . RESULTS Consumption of the DASH diet compared with the control diet result ed in decreased FPG ( -7.62 versus 3.68 mg/dL ; P = 0.02 ) , serum insulin levels ( -2.62 versus 4.32 μIU/mL , P = 0.03 ) , and HOMA-IR score ( -0.8 versus 1.1 ; P = 0.03 ) . Increased concentrations of plasma TAC ( 45.2 versus -159.2 mmol/L ; P < 0.0001 ) and GSH ( 108.1 versus -150.9 μmol/L ; P < 0.0001 ) also were seen in the DASH group compared with control group . We failed to find a significant difference in mean changes of serum hs-CRP levels between the two diets . Within-group comparisons revealed significant reductions in plasma TAC and GSH levels in the control diet , while a significant increase in these biomarkers in the DASH diet . CONCLUSION Consumption of the DASH diet in pregnant women with GDM had beneficial effects on FPG , serum insulin levels , HOMA-IR score , plasma TAC , and total GSH levels . The effects of this dietary pattern on pregnancy outcomes need to be investigated in future studies A DASH ( dietary approaches to stop hypertension ) dietary pattern rich in fruits and vegetables and low-fat dairy products with increased dietary protein provided primarily from plant protein sources decreases blood pressure . No studies , however , have evaluated the effects of a DASH-like diet with increased dietary protein from lean beef on blood pressure and vascular health . The aim of this study was to study the effect of DASH-like diets that provided different amounts of protein from lean beef ( DASH 28 g beef per day ; beef in an optimal lean diet ( BOLD ) 113 g beef per day ; beef in an optimal lean diet plus additional protein ( BOLD+ ) 153 g beef per day ) on blood pressure , endothelial function and vascular reactivity versus a healthy American diet ( HAD ) . Using a r and omized , crossover study design , 36 normotensive participants ( systolic blood pressure ( SBP ) , 116±3.6 mm Hg ) were fed four isocaloric diets , : HAD ( 33 % total fat , 12 % saturated fatty acids ( SFA ) , 17 % protein ( PRO ) , 20 g beef per day ) , DASH ( 27 % total fat , 6 % SFA , 18 % PRO , 28 g beef per day ) , BOLD ( 28 % total fat , 6 % SFA , 19 % PRO , 113 g beef per day ) and BOLD+ ( 28 % total fat , 6 % SFA , 27 % PRO , 153 g beef per day ) , for 5 weeks . SBP decreased ( P<0.05 ) in subjects on the BOLD+ diet ( 111.4±1.9 mm Hg ) versus HAD ( 115.7±1.9 ) . There were no significant effects of the DASH and BOLD diets on SBP . Augmentation index ( AI ) was significantly reduced in participants on the BOLD diet ( −4.1 % ) . There were no significant effects of the dietary treatments on diastolic blood pressure or endothelial function ( as measured by peripheral arterial tonometry ) . A moderate protein DASH-like diet including lean beef decreased SBP in normotensive individuals . The inclusion of lean beef in a heart healthy diet also reduced peripheral vascular constriction Few studies exist regarding the effects of the Dietary Approaches to Stop Hypertension ( DASH ) diet on novel cardiovascular risk factors among type 2 diabetic patients . We evaluated the effects of the DASH eating pattern on C-reactive protein ( CRP ) level , coagulation abnormalities , and hepatic function tests in type 2 diabetic patients . In this r and omized , crossover clinical trial , 31 type 2 diabetic patients consumed a control diet or the DASH diet  for 8 wk . The DASH diet was rich in fruits , vegetables , whole grains , and low-fat dairy products and low in saturated fat , total fat , cholesterol , refined grains , and sweets , with a total of 2400 mg/d sodium . The control diet was a st and ard diet for diabetic patients .  There was a 4-wk washout between the 2 trial phases . The main outcome measures were CRP level , coagulation indices , and hepatic function tests . The mean percent change for plasma CRP level was -26.9 ± 3.5 % after the DASH diet period and -5.1 ± 3.8 % after the control diet period ( P = 0.02 ) . Decreases in both alanine aminotransferase and aspartate aminotransferase levels were greater after consuming the DASH diet compared with the control diet ( -14.8 ± 3.0 % vs -6.6 ± 3.4 % ; P = 0.001 ; -29.4 ± 3.7 % vs -5.9 ± 1.4 % ; P = 0.001 , respectively ) . The decrease in the plasma fibrinogen level during the DASH diet period ( -11.4 ± 3.6 % ) was greater than that during the control diet ( 0.5 ± 3.4 % ) ( P = 0.03 ) . Among diabetic patients , the DASH diet can play an important role in reducing inflammation , plasma levels of fibrinogen , and liver aminotransferases . Future longer term studies are recommended UNLABELLED This study was design ed to assess the effects of Dietary Approaches to Stop Hypertension ( DASH ) eating plan on insulin resistance and serum hs-CRP in overweight and obese women with PCOS . This r and omized controlled clinical trial was done on 48 women diagnosed with PCOS . Subjects were r and omly assigned to consume either the control ( n=24 ) or the DASH eating pattern ( n=24 ) for 8 weeks . The DASH diet consisted of 52 % carbohydrates , 18 % proteins , and 30 % total fats . It was design ed to be rich in fruits , vegetables , whole grains , and low-fat dairy products and low in saturated fats , cholesterol , refined grains , and sweets . Sodium content of the DASH diet was design ed to be less than 2 400 mg/day . The control diet was also design ed to contain 52 % carbohydrates , 18 % protein , and 30 % total fat . Fasting blood sample s were taken at baseline and after 8 weeks intervention to measure -insulin resistance and serum hs-CRP levels . -Adherence to the DASH eating pattern , compared to the -control diet , result ed in a significant reduction of serum insulin levels ( -1.88 vs. 2.89 μIU/ml , p=0.03 ) , HOMA-IR score ( -0.45 vs. 0.80 ; p=0.01 ) , and serum hs-CRP levels ( -763.29 vs. 665.95 ng/ml , p=0.009 ) . Additionally , a significant reduction in waist ( -5.2 vs. -2.1 cm ; p=0.003 ) and hip circumference ( -5.9 vs. -1 cm ; p<0.0001 ) was also seen in the DASH group compared with the control group . In conclusion , consumption of the DASH eating pattern for 8 weeks in overweight and obese women with PCOS result ed in the improvement of insulin resistance , serum hs-CRP levels , and abdominal fat accumulation . CLINICAL TRIAL REGISTRATION NUMBER www.i rct .ir : I RCT 201304235623N6 BACKGROUND Although the DASH ( Dietary Approaches to Stop Hypertension ) diet has been shown to lower blood pressure ( BP ) in short-term feeding studies , it has not been shown to lower BP among free-living individuals , nor has it been shown to alter cardiovascular biomarkers of risk . OBJECTIVE To compare the DASH diet alone or combined with a weight management program with usual diet controls among participants with prehypertension or stage 1 hypertension ( systolic BP , 130 - 159 mm Hg ; or diastolic BP , 85 - 99 mm Hg ) . DESIGN AND SETTING R and omized , controlled trial in a tertiary care medical center with assessment s at baseline and 4 months . Enrollment began October 29 , 2003 , and ended July 28 , 2008 . PARTICIPANTS Overweight or obese , unmedicated out patients with high BP ( N = 144 ) . INTERVENTIONS Usual diet controls , DASH diet alone , and DASH diet plus weight management . OUTCOME MEASURES The main outcome measure is BP measured in the clinic and by ambulatory BP monitoring . Secondary outcomes included pulse wave velocity , flow-mediated dilation of the brachial artery , baroreflex sensitivity , and left ventricular mass . RESULTS Clinic-measured BP was reduced by 16.1/9.9 mm Hg ( DASH plus weight management ) ; 11.2/7.5 mm ( DASH alone ) ; and 3.4/3.8 mm ( usual diet controls ) ( P < .001 ) . A similar pattern was observed for ambulatory BP ( P < .05 ) . Greater improvement was noted for DASH plus weight management compared with DASH alone for pulse wave velocity , baroreflex sensitivity , and left ventricular mass ( all P < .05 ) . CONCLUSION For overweight or obese persons with above-normal BP , the addition of exercise and weight loss to the DASH diet result ed in even larger BP reductions , greater improvements in vascular and autonomic function , and reduced left ventricular mass . CLINICAL TRIAL REGISTRATION clinical trials.gov Identifier : NCT00571844 BACKGROUND Although the Dietary Approaches to Stop Hypertension ( DASH ) diet is an accepted nonpharmacologic treatment for hypertension , little is known about what patient characteristics affect dietary adherence and what level of adherence is needed to reduce blood pressure ( BP ) . OBJECTIVE Our aim was to determine what factors predict dietary adherence and the extent to which dietary adherence is necessary to produce clinical ly meaningful BP reductions . DESIGN Ancillary study of the ENCORE ( Exercise and Nutrition Interventions for Cardiovascular Health ) trial -- a 16-week r and omized clinical trial of diet and exercise . PARTICIPANTS / SETTING Participants included 144 sedentary , overweight , or obese adults ( body mass index 25 to 39.9 ) with high BP ( systolic 130 to 159 mm Hg and /or diastolic 85 to 99 mm Hg ) . INTERVENTION Patients were r and omized to one of three groups : DASH diet alone , DASH diet plus weight management , and Usual Diet Controls . MAIN OUTCOMES MEASURES Our primary outcomes were a composite index of adherence to the DASH diet and clinic BP . STATISTICAL ANALYSES PERFORMED General linear models were used to compare treatment groups on post-treatment adherence to the DASH diet . Linear regression was used to examine potential predictors of post-treatment DASH adherence . Analysis of covariance was used to examine the relation of adherence to the DASH diet and BP . RESULTS Participants in the DASH diet plus weight management ( 16.1 systolic BP [ SBP ] ; 95 % CI 13.0 to 19.2 mm Hg and 9.9 diastolic BP [ DBP ] ; 95 % CI 8.1 to 11.6 mm Hg ) and DASH diet alone ( 11.2 SBP ; 95 % CI 8.1 to 14.3 mm Hg and 7.5 DBP ; 95 % CI 5.8 to 9.3 mm Hg ) groups showed significant reductions in BP in comparison with Usual Diet Controls participants ( 3.4 SBP ; 95 % CI 0.4 to 6.4 mm Hg and DBP 3.8 ; 95 % CI 2.2 to 5.5 mm Hg ) . Greater post-treatment consumption of DASH foods was noted in both the DASH diet alone ( mean = 6.20 ; 95 % CI 5.83 to 6.57 ) and DASH diet plus weight management groups ( mean = 6.23 ; 95 % CI 5.88 to 6.59 ) compared with Usual Diet Controls ( mean = 3.66 ; 95 % CI 3.30 to 4.01 ; P<0.0001 ) , and greater adherence to the DASH diet was associated with larger reductions in clinic SBP and DBP ( P ≤ 0.01 ) . Only ethnicity predicted dietary adherence , with African Americans less adherent to the DASH diet compared with whites ( 4.68 ; 95 % CI 4.34 to 5.03 vs 5.83 ; 95 % CI 5.50 to 6.11 ; P<0.001 ) . CONCLUSIONS Greater adherence to the DASH diet was associated with larger BP reductions independent of weight loss . African Americans were less likely to be adherent to the DASH dietary eating plan compared with whites , suggesting that culturally sensitive dietary strategies might be needed to improve adherence to the DASH diet We tested whether lowering of blood pressure ( BP ) on the dietary approaches to stop hypertension ( DASH ) diet was associated with changes in peripheral vascular function : endothelial function , assessed by flow-mediated vasodilatation ( FMD ) of the brachial artery , and subcutaneous adipose tissue blood flow ( ATBF ) . We also assessed effects on heart rate variability ( HRV ) as a measure of autonomic control of the heart . We allocated 27 men and women to DASH diet and control groups .  We measured FMD , ATBF and HRV on fasting and after ingestion of 75 g glucose , before and after 30 days on dietary intervention , aim ing for weight maintenance . The control group did not change their diet . The DASH-diet group complied with the diet as shown by significant reductions in systolic ( P<0.001 ) and diastolic ( P=0.005 ) BP , and in plasma C-reactive protein ( P<0.01 ) , LDL-cholesterol ( P<0.01 ) and apolipoprotein B ( P=0.001 ) , a novel finding . Body weight changed by < 1 kg . There were no changes in the control group . We found no changes in FMD , or in ATBF , in the DASH-diet group , although heart rate fell ( P<0.05 ) . Glucose and insulin concentrations did not change . In this small-scale study , the DASH diet lowered BP independently of peripheral mechanisms
Adherence to DASH diet is effective in improving circulating serum inflammatory biomarkers in adults , compared with usual diet ; therefore , it could be a valuable strategy to suppress inflammation process
BACKGROUND & AIMS Dietary approaches to stop hypertension ( DASH ) diet is associated with improved blood pressure and risk of cardiovascular diseases .
It is proposed that DASH might also improve systemic inflammatory markers like highly sensitive C-reactive protein ( hs-CRP ) ; however , interventional studies have led to conflicting results .
The aim of current systematic review was to summarize results of r and omized clinical trials examining the effect of DASH on inflammatory biomarkers .