Subgroup analyses showed the most marked relation between sugar intakes and lipids in studies in which efforts were made to ensure an energy balance and when no difference in weight change was reported .
CONCLUSIONS Dietary sugars  influence blood pressure and serum lipids .
The relation is independent of effects of  sugars on body weight .
BACKGROUND Dietary sugars have been suggested as a cause of obesity , several chronic diseases , and a range of cardiometabolic risk factors , but there is no convincing evidence of a causal relation between sugars and risk factors other than body weight .
OBJECTIVE We conducted a systematic review and meta- analysis of r and omized controlled trials that examined effects of the modification of dietary free sugars on blood pressure and lipids .
Fructose and insulin sensitivity in patients with type 2 diabetes.
The effect of dietary fructose ( 20 % of carbohydrate calories , 45 - 65 g day-1 for 4 weeks ) on glycaemic control , serum lipid , lipoprotein and apoprotein A-I and A-II concentrations and on insulin sensitivity was studied in 10 type 2 diabetic patients . The study was done in a r and omized , double-blind fashion with crystalline fructose or placebo administered evenly during 4 meals or snacks per day . The patients were hospitalized throughout the study periods . The fasting plasma glucose concentration decreased during the fructose ( from 10.7 + /- 1.4 mmol l-1 to 8.0 + /- 0.8 mmol l-1 , P < 0.02 ) and the control diet ( from 10.1 + /- 0.9 mmol l-1 to 8.0 + /- 0.7 mmol l-1 , P < 0.05 ) . The mean diurnal blood glucose concentration also fell both during the fructose ( from 10.8 + /- 0.5 mmol l-1 to 8.4 + /- 0.3 mmol l-1 , P < 0.001 ) and the control diet ( from 10.3 + /- 0.3 mmol l-1 to 8.8 + /- 0.9 mmol l-1 , P < 0.01 ) . The HbA1 concentration improved ( P < 0.02 ) only during the fructose diet . Insulin sensitivity increased by 34 % ( P < 0.05 ) during the fructose diet , but remained unchanged during the control period . Serum insulin , triglyceride , apoprotein A-I and A-II concentrations , body weight , blood pressure and blood lactate remained unchanged during both diets . In conclusion , substitution of moderate amounts of fructose for complex carbohydrates can improve glycaemic control and insulin sensitivity in patients with type 2 diabetes
Subgroup analyses showed the most marked relation between sugar intakes and lipids in studies in which efforts were made to ensure an energy balance and when no difference in weight change was reported .
CONCLUSIONS Dietary sugars  influence blood pressure and serum lipids .
The relation is independent of effects of  sugars on body weight .
BACKGROUND Dietary sugars have been suggested as a cause of obesity , several chronic diseases , and a range of cardiometabolic risk factors , but there is no convincing evidence of a causal relation between sugars and risk factors other than body weight .
OBJECTIVE We conducted a systematic review and meta- analysis of r and omized controlled trials that examined effects of the modification of dietary free sugars on blood pressure and lipids .