A study from Virginia Tech found that ultra-processed foods may affect teenagers differently than older young adults. Participants aged 18 to 21 ate more at buffets and consumed more snacks even when they weren't hungry after two weeks of eating a diet high in ultra-processed foods. Scientists have found that eating without hunger is a predictor of future weight gain. These results suggest an increased vulnerability to ultra-processed foods during late adolescence. The study thus points out that ultra-processed foods can disrupt the natural signals of hunger and satiety in young people. These findings are important for understanding the impact of nutrition on adolescent health.