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A team of psychologists at the University of Aberdeen in the U.K. found that ready-to-eat food looks more appealing than items that require cooking.
They point out that unhealthy foods that contribute to weight gain are often advertised as tempting ready-made meals, like hamburgers, fries, and pizza. By contrast, healthy foods — broccoli or salmon, for example — are frequently shown raw. That difference makes it much harder to resist a calorie-laden splurge, especially after a long day at work.
The study suggests a simple strategy to help people choose healthier options: prepare healthy foods so they’re ready to eat right away, a tip the Daily Mail highlighted.
Peel a banana, put it in the fridge, and grab it when you get home. Pre-portion nuts into a bowl. Slice peppers into rings or strips.
The Paradox: High-calorie, unhealthy food feels more tempting
The team’s conclusions come from observing that food looks more appetizing when it requires no effort to prepare. To test that idea, researchers ran an experiment linking food readiness to cravings. More than 200 volunteers aged 16 to 66 took part in the study; they were shown photographs of food at various stages of preparation and asked how appealing each item was on a scale from 0 to 100.
The images were presented in pairs: raw versus cooked, packaged versus unpackaged, and whole versus sliced. For example, a raw piece of beef was shown alongside a cooked steak, while a whole pepper was compared with sliced pieces.
Raw food averaged about 27 out of 100 in appeal, while cooked food averaged 38. Packaged food scored around 34, slightly lower than unpackaged food at about 36. Sliced items averaged near 32, versus about 30 for food that still needed to be cut.
Participants who said they were hungry before viewing the photos were more likely to prefer ready-to-eat items over foods that required preparation.
The results, published in the journal Food Quality and Preference, showed that food is roughly 15 percent more appealing when it can be eaten immediately rather than needing to be cooked, cleaned, or even just taken out of packaging.
The findings applied across food types: for example, volunteers rated a sliced banana as more attractive than a banana that still needed peeling.
The report found that high-calorie foods trigger stronger cravings. Advertisers for fast food exploit that effect, often promoting unhealthy options.
Make healthy foods look ready to eat to boost appeal
The study suggests healthy-eating campaigns should present fruits, vegetables, and other nutritious foods as ready to eat—visually appealing and appetizing.
Dietitians and other nutrition and weight-loss professionals can use this insight. Understanding how ready and unprepared foods are perceived can make it easier to persuade people to adopt healthier habits.
Dr. Helen Knight, the lead author of the study, advised: “If you’re starting the year trying to eat better, make sure to prepare healthy meals and avoid going to the store when you’re hungry.”
