A USDA Economic Research Service report reports higher consumption of fruit is associated with a lower body weight, but the same does not appear to be true for vegetables.
The USDA’s report, called “Healthy Vegetables Undermined by the Company They Keep,” said that processing and preparation methods plays a role in the influence of fruits and vegetables on body weight.
“Earlier ERS research found fruit consumption to be linked to healthier weight status, but for vegetable consumption there was no such link,” said report authors Joanne Guthrie and Biing-Hwan Lin. The report, issued in early May, said fruits are consumed in their natural states more than vegetables.
“Unlike naturally sweet fruit, Americans may find vegetables more palatable if prepared with added fats or oils, such as in fried potatoes or creamed spinach, or in a mixed dish like pizza,” according to the study. Americans often eat vegetables prepared in ways that add calories and sodium and remove dietary fiber.
Research in 2002 found that, on average, healthy weight children and adults ate more fruit than their overweight peers.
“Higher fruit consumption was associated with lower BMI for adult men and women and for adolescent girls and boys 10 years of age and above,” according to the study. However, total vegetable consumption had no association with body weight, the authors said. The 2002 study found that when vegetables were separated into two groups — white potatoes only, and all other vegetables — white potato intake was associated with higher BMI for both adult men and women. The study found that intake of vegetables other than potatoes was associated with lower BMI among women but not among any other age-sex groups.