A study published in Frontiers in Nutrition reports on Apr. 17 that consuming fruit smoothies is associated with better health outcomes compared to drinking fruit juice or eating little fruit. The research compared the effects of different forms of fruit—solid, juice, and smoothie—on self-reported health among participants.
The findings matter because while fruits are widely recommended for their fiber, nutrients, and antioxidants, most dietary guidelines do not distinguish between various forms of fruit consumption. This study suggests that how people consume their fruit could influence their overall health profile.
Researchers analyzed data from 443 participants who reported on their diet and health habits. Participants were grouped based on whether they mainly consumed solid fruits, juices, smoothies, or had a low-fruit diet. Those who drank smoothies reported the best physical and mental health scores and had lower rates of chronic diseases such as hypertension (19%), high cholesterol (20%), and diabetes (8%). In contrast, those who drank primarily juice showed higher rates of chronic disease and more physician visits per year.
"Solid fruit and fruit smoothies were linked to better overall health profiles, though these associations may be influenced by healthier overall lifestyles among these groups," the authors said. "In contrast, fruit juices were associated with poor health outcomes." The study also found that smoothie consumers had lower body mass index (BMI) levels than those who consumed mostly juice or little fruit.
However, researchers noted limitations including reliance on self-reported data—which can introduce bias—and a non-representative sample size. They cautioned that the findings show association rather than causation: "As a cross-sectional study, the findings show associations rather than cause-and-effect relationships...and are further limited by potential residual confounding," they said.
Current dietary guidelines such as DASH do not clearly distinguish between different forms of unsweetened fruits except for prohibiting sweetened beverages. The authors recommend more longitudinal studies with precise measurements to inform future public health policies regarding optimal forms of fruit consumption.
