August M
How food is presented could play a bigger role in dieting than previously thought.
Researchers say labels, perception and environment all influence how the body responds after eating, reports the BBC.
According to a BBC report, studies indicate that foods marketed as “healthy” may leave people feeling less satisfied, even when their nutritional value is identical to alternatives. This reduced sense of fullness can lead to increased consumption later.
Experts say the issue is compounded by the modern food environment, where ultra-processed products dominate shelves and are engineered to be highly appealing.
“Ultra-processed products are essentially like being at a heavy metal concert. They’re designed to drown everything else out. And it’s really hard for folks to tune in to the subtle classical music of a fruit or a vegetable,” said Ashley Gearhardt of the University of Michigan, as quoted by the BBC.
Expectation effects
Scientists group these findings under what some describe as “expectation effects” in nutrition, where beliefs about food alter physical responses.
The BBC highlighted research from Stanford University showing that perception alone can influence hunger hormones. In one experiment, participants consumed identical milkshakes but were told different calorie counts.
Those who believed they were drinking a more indulgent option showed a greater drop in ghrelin, a hormone linked to appetite.
“Believing you’re eating enough makes your body respond as if it’s had enough,” said lead researcher Alia Crum.
Researchers interpret this as evidence that satisfaction is partly driven by expectation, not just nutritional intake.
Diet rethink
Taken together, the findings suggest that strict dieting focused on restriction may have unintended consequences. Feeling deprived could reduce satisfaction and potentially encourage overeating later.
Instead, specialists recommend a broader approach that includes enjoyment alongside nutrition. Emphasising taste, rather than just health claims, may help people feel more satisfied and maintain healthier habits.
The BBC reports that reducing reliance on ultra-processed foods while maintaining a positive relationship with eating could support better long-term outcomes.
Experts conclude that weight management may depend not only on calorie intake, but also on how individuals perceive and experience their food.
Sources: BBC, Stanford University, University of Michigan
