There was interaction by food source , with specific food sources showing beneficial effects ( fruit and fruit juice ) or harmful effects ( sweetened milk and mixed sources ) in substitution studies and harmful effects ( sugars‐sweetened beverages and fruit juice ) in addition studies on at least one outcome .
Conclusions Energy control and food source appear to mediate the effect of fructose‐containing sugars on glycaemic control .
Although most food sources of these sugars ( especially fruit ) do not have a harmful effect in energy matched substitutions with other macronutrients , several food sources of fructose‐containing sugars ( especially sugars‐sweetened beverages ) adding excess energy to diets have harmful effects .
Objective To assess the effect of different food sources of fructose‐containing sugars  on glycaemic control at different levels of energy control .
Effect of daily supplementation of fruits on oxidative stress indices and glycaemic status in type 2 diabetes mellitus.
This study sought to examine whether consumption of two low-calorie fruit/day for 3-months can effectively improve oxidative stress , anthropometry , blood pressure and glycaemic control in type 2 diabetes mellitus . Study involved 123 patients who were assigned to receive either st and ard care or with additional dietary therapy .  Dietary intervention result ed in significant reduction in malondialdehyde , plasma glucose , glycated haemoglobin and improvement in antioxidants like vitamin C and reduced glutathione when compared to controls . Mean plasma levels of vitamin C increased by 64 % ( p < 0.001 ) . There were no differences in waist circumference , waist-to-hip ratio , blood pressure , vitamin E and superoxide dismutase in the intervention group at follow-up . Diet rich in fruits can improve some antioxidants which are likely to reduce oxidative stress in type 2 diabetes . Regular consumption of fruits can lower the glycaemic status in these patients . The study supports the usefulness of plasma vitamin C as a biomarker for fruit intake
There was interaction by food source , with specific food sources showing beneficial effects ( fruit and fruit juice ) or harmful effects ( sweetened milk and mixed sources ) in substitution studies and harmful effects ( sugars‐sweetened beverages and fruit juice ) in addition studies on at least one outcome .
Conclusions Energy control and food source appear to mediate the effect of fructose‐containing sugars on glycaemic control .
Although most food sources of these sugars ( especially fruit ) do not have a harmful effect in energy matched substitutions with other macronutrients , several food sources of fructose‐containing sugars ( especially sugars‐sweetened beverages ) adding excess energy to diets have harmful effects .
Objective To assess the effect of different food sources of fructose‐containing sugars  on glycaemic control at different levels of energy control .