For most comparisons , the credibility of evidence was rated very low to moderate , with the exception for the DASH vs. the low-fat dietary approach for which the quality of evidence was rated high .
Conclusion : The present network meta- analysis suggests that the DASH dietary approach might be the most effective dietary measure to reduce blood pressure among hypertensive and pre-hypertensive patients based on high quality evidence
ABSTRACT Background : Pairwise meta-analyses have shown beneficial effects of individual dietary approaches on blood pressure but their comparative effects have not been established .
Objective : Therefore we performed a systematic review of different dietary intervention trials and estimated the aggregate blood pressure effects through network meta- analysis including hypertensive and pre-hypertensive patients .
Weight loss with high and low carbohydrate 1200 kcal diets in free living women
This r and omised controlled trial examined anthropometric changes and cardiovascular benefits of six months of weight management in 110 free living women , aged 18–68 y and BMI 25–50 kg/m2 , who received 1200 kcal/d diet treatments of either high ( 58 % energy , n=57 ) or low ( 35 % energy , n=53 ) carbohydrate ( CHO ) content .  Body weight , plasma total , HDL and LDL cholesterol , triglyceride and blood pressure were measured . Examination at three months showed women on high CHO lost ( mean±s.e.m . ) 4.3±0.5 kg and those on low CHO lost 5.6±0.6 kg of body weight . Changes in risk factors did not significantly differ between the two diet treatments throughout the study . However those on high CHO diets significantly lowered their plasma total cholesterol by 0.33 mmol/l ( 95 % CI : 0.10 , 0.55 ) , LDL cholesterol by 0.23 mmol/l ( 0.02 , 0.43 ) and HDL cholesterol by 0.05 mmol/l ( 0.03 , 0.10 ) , while women on low CHO diets lowered only plasma triglyceride by 0.28 mmol/l ( 0.08 , 0.48 ) . Blood pressure did not change significantly on either diet . After six months , women on high CHO lost 5.6±0.8 kg and those on low CHO lost 6.8±0.8 kg . On the high CHO  diet , total cholesterol remained significantly below the baseline value at 0.34 mmol/l ( 0.13 , 0.56 ) , triglyceride was significantly lowered by 0.27 mmol/l ( 0.10 , 0.45 ) , and HDL cholesterol returned to the baseline value . On the low CHO  diet , triglyceride remained the only risk factor to be significantly improved . A subgroup of 46 postmenopausal women lost significantly ( P<0.05 ) more weight on the low CHO diet than high CHO diet . In conclusion , these results provided some support for preferring a high CHO diet to a lower CHO approach in weight management , from the point of view of risk reduction , but do not indicate a consistently more rapid weight loss with either diet
For most comparisons , the credibility of evidence was rated very low to moderate , with the exception for the DASH vs. the low-fat dietary approach for which the quality of evidence was rated high .
Conclusion : The present network meta- analysis suggests that the DASH dietary approach might be the most effective dietary measure to reduce blood pressure among hypertensive and pre-hypertensive patients based on high quality evidence
ABSTRACT Background : Pairwise meta-analyses have shown beneficial effects of individual dietary approaches on blood pressure but their comparative effects have not been established .
Objective : Therefore we performed a systematic review of different dietary intervention trials and estimated the aggregate blood pressure effects through network meta- analysis including hypertensive and pre-hypertensive patients .