A recent study conducted by the National Institutes of Health (NIH) investigated the effects of ultraprocessed foods on human health. These foods, which now make up over 70% of the U.S. food supply, are known for their high levels of fat, sodium, and sugar. Examples include sugary cereals, frozen pizzas, and potato chips. The research aimed to determine whether these foods cause individuals to eat more calories, leading to obesity and other health concerns. To gather accurate data, participants such as Sam Srisatta spent 28 days in a controlled environment where their food intake, movement, and vital signs were closely observed. Each participant received customized meals that followed strict guidelines designed by NIH dietitians. The study aligns with ongoing efforts to address the rising rates of diet-related illnesses across the United States.

The research revealed that participants who consumed ultraprocessed foods tended to eat about 1,000 calories more per day than those who consumed minimally processed meals. This increase in calorie intake led to noticeable weight gain. Researchers believe this pattern may be influenced by specific ingredient combinations, such as fat, sugar, sodium, and carbohydrates, which can make food more appealing. While some experts questioned the study’s short duration, others suggested that longer research with more participants could strengthen the results. Preliminary findings indicate that modifying certain qualities in ultraprocessed foods may reduce excessive calorie consumption, even when such foods remain a major part of an individual’s diet.