People ate about 400 more calories, on average, during the test day when they started lunch with juice, compared to when they started with solid fruit, according to the findings published in the International Journal of Obesity.
But those results in favor of fresh and dried fruit did not hold up over the longer-term, Mattes and his team found. When the researchers provided the volunteers with 400 to 550 calories of either fruits and vegetables or fruit juice each day for eight weeks, there was no change in how they rated their hunger or fullness at regular intervals during each test period.
That means simply adding fruits and veggies to meet nutritional guidelines may not be enough to help people stay full and lose weight - and may actually make it harder for them to shed extra pounds, researchers said.
Mattes and his colleagues advised "careful implementation of recommendations" through counseling or other nutrition programs to make sure people taking steps to improve their diet don't end up accidentally putting on more weight.
SOURCE: bit.ly/SzJoe9 International Journal of Obesity, online November 20, 201