Why ultra-processed foods prompt overeating in teens

Ultra-processed foods may encourage overeating in late adolescents, even when they are not hungry, according to a study from Virginia Tech. Researchers found that participants aged 18 to 21 consumed more calories at a buffet and continued snacking after meals following just two weeks on an ultra-processed diet. This effect was not seen in slightly older young adults aged 22 to 25, suggesting that late adolescence may be a particularly vulnerable period for developing unhealthy eating patterns. Eating without hunger is a known predictor of future weight gain, raising concerns about long-term health risks. With ultra-processed foods making up a large share of young people’s diets in the U.S., the findings highlight how early exposure during a critical developmental stage could shape lasting food behaviors and increase obesity risk later in life.

18-12-2025