Young adults are often regarded as a single group when it comes to diet and health.
However, a new U.S. study published in Obesity suggests that there are clear differences within this group.
In particular, the youngest adults appear to react differently to highly processed foods than their slightly older peers.
The youngest eat more
The study shows that participants aged 18 to 21 consumed more calories after a period on an ultra-processed diet.
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They also continued eating even when they were no longer hungry. This behavior was not observed among participants aged 22 to 25.
According to the researchers, this may indicate that the late teenage years and the transition into adulthood are a period during which eating habits are more easily influenced.
Previous research has shown that eating without being hungry increases the risk of weight gain later in life.
How the study was conducted
The study was carried out by Virginia Tech and included 27 young adults with stable weight.
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Participants followed two different dietary plans during separate periods. One consisted mainly of ultra-processed foods, while the other completely excluded them.
The diets were carefully designed so that calorie content and nutrient composition were the same.
After each period, participants took part in a meal with free access to food, during which researchers measured how much they ate.
Why the study is relevant
The findings come at a time when many young people are taking on greater responsibility for their own food choices while also having easy access to snacks and ready-made meals.
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The study differs from previous research on adults, in which weight gain has been observed over longer periods.
The researchers emphasize that the study was short-term and based on a small number of participants.
The results may therefore point to a possible association but cannot, on their own, explain the trend.
Sources: Science Daily, and Obesity.
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