An increase in total fruit intake was associated with a change in weight of -0.53 lb (a weight loss of 0.24 kg), and an increase in total vegetable intake was associated with a weight change of -0.25 lb (a weight loss of 0.11 kg) - for each extra daily serving over a 4 years period.
133,468 US men and women were followed for up to 24 years. The benefits of increased consumption were strongest for berries, apples or pears, tofu (soy), cauliflower, and cruciferous and green leafy vegetables. Increased satiety with fewer calories could be partly responsible. Obesity is a primary risk factor for many life-shortening health conditions.