The Influence of Ultraprocessed Food Consumption on Energy Intake in Emerging Adulthood: A Controlled Feeding Trial.

ABSTRACT:

Objective

This study examined the impact of a 2-week eucaloric diet high in ultraprocessed foods (UPF) compared to a diet without UPF (non-UPF) on ad libitum energy intake (EI) and food selection in individuals aged 18-25.

Methods

In a randomized, crossover, proof-of-concept trial, participants completed two 14-day controlled feeding periods (81% UPF vs. 0% UPF), with a 4-week washout. Diets were matched for macronutrients, fiber, added sugar, diet quality, and energy density. Following each condition, participants consumed an ad libitum buffet meal including UPF and non-UPF. Energy and food grams consumed were quantified. Statistical analyses were conducted for the full sample, late adolescents (aged 18-21), and young adults (aged 22-25).

Results

Twenty-seven individ

SUBMITTER: Rego MLM 

PROVIDER: S-EPMC12850616 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature