NewsMakers
Using technology during mealtimes may decrease food intake, study finds
Being distracted by technology during mealtimes may decrease the amount of food a person eats, nutrition scientists suggest in a new study.
Being distracted by technology during mealtimes may decrease the amount of food a person eats, nutrition scientists suggest in a new study.
When 119 young adults consumed a meal while playing a simple computer game for 15 minutes, they ate significantly less than when they ate the same meal without distractions, said lead author Carli A. Liguori.
Liguori conducted the research while earning a master’s degree in food science and human nutrition at the University of Illinois at Urbana-Champaign. The findings were published recently in the Journal of Nutrition.
Participants’ food consumption was evaluated on two separate occasions – one day when they played the game while eating and on another day when they ate without distractions.
The game, called Rapid Visual Information Processing, tests users’ visual sustained attention and working memory and has been used extensively by researchers in evaluating people for problems such as Alzheimer’s disease and attention-deficit disorder.
The game randomly flashes series of digits on the computer screen at the rate of one per second. Participants in the study were instructed to hit the space bar on the keyboard whenever they saw three consecutive odd numbers appear.
“It’s fairly simple but distracting enough that you have to really be watching it to make sure that you don’t miss a number and are mentally keeping track,” Liguori said. “That was a big question for us going into this – how do you ensure that the participant is distracted? And the RVIP was a good solution for that.”
The participants, who had fasted for 10 hours before each visit, were told to consume as much as they wanted of 10 miniature quiches while they were either playing the game or eating quietly without distractions for 15 minutes.
The food was weighed and counted before and after it was given to each person.
After a 30-minute rest period, participants completed an exit survey that asked them to recall how many quiches they had been given and the number they had consumed. They also rated how much they enjoyed the meal as well as their feelings of hunger and fullness.
Liguori hypothesized that, in keeping with prior research, when people ate while using the computer game they would not only consume more food but would have poorer memory of what they ate and enjoy it less.
Instead, she found that participants ate less when they were distracted by the computer game. Moreover, participants’ meal memory – their ability to recall how much they had been served and eaten – was less accurate when they were distracted than when they ate quietly without the game.
However, participants’ consumption on their second visit was affected by which activity they had performed during their initial visit. The people who engaged in distracted eating on their first visit ate significantly less than their counterparts who did not experience the distracted eating condition until their second visit.
Moreover, when participants who engaged in the distracted eating on their first visit were served the quiches on their next visit, “they behaved as if they were encountering the food for the first time, as evidenced by a lower rate of consumption similar to that of those who began” with the non-distracted meal, according to the study.
“It really seemed to matter whether they were in that distracted eating group first,” said Liguori, who is a visiting faculty member in health and physical activity at the University of Pittsburgh. “Something about being distracted on their initial visit really seemed to change the amount they consumed during the nondistracted meal. There may be a potent carryover effect between the mechanism of distraction and the novelty of the food served.”
The results suggest that there may be a difference between distracted eating and mindless eating. Although the terms are often used interchangeably, Liguori hypothesized that they may be distinctly different behaviors with nuances that need to be explored.
Mindless eating may occur when we eat without intending to do so, Liguori hypothesized. For example, we grab a handful of candy from the jar at the office as we walk by or start snacking on chips because they happen to be in sitting front of us.
Conversely, distracted eating may occur when we engage in a secondary activity such as watching TV or answering emails while we are deliberately eating – for example, when we’re eating dinner, she said.
Although prior research indicated that people eat more when distracted, Liguori hypothesized that the differing results in her study may have been associated with examining within-person differences – comparing individuals’ consumption under the , rather than comparing individuals’ behavior to that of peers.
Or, she said, her findings could have been influenced by factors such as the type of distraction that was used, the type of food served or by using college students as the study population, limiting the diversity in participants’ age, race, food preferences and motivation to regulate their consumption.
The study was co-written by U. of I. food science and human nutrition professor Sharon M. Nickols-Richardson, who is also director of Illinois Extension and Outreach; and then-graduate student Cassandra J. Nikolaus.
Beauty & Fashion
Redefining aesthetics: From anti-aging to healthy aging
Growing attention is now being given to healthy aging, understanding how the entire face changes over time, preserving facial harmony, and helping people continue to look like themselves.
For decades, “anti-aging” has defined the beauty and aesthetics conversation, promising to erase wrinkles and reverse the signs of time. Today, that conversation is shifting.
Aging is no longer just about looking younger. Growing attention is now being given to healthy aging, understanding how the entire face changes over time, preserving facial harmony, and helping people continue to look like themselves.
A review published in Facial Plastic Surgery, The Anatomy of the Aging Face: A Review, describes aging as changes across bone, ligaments, muscles, fat, and skin. Another review in Aesthetic Surgery Journal, The Facial Aging Process From the “Inside Out”, explains how changes beneath the surface eventually become visible on top.
Studies in Plastic and Reconstructive Surgery show facial fat is organized into distinct anatomical compartments that can lose volume and shift position over time, altering facial shape and balance.
For multi-awarded aesthetic physician Dr. James Co, founder of Cosma Institute and Architect of Aesthetic Confidence, these findings are the reason aesthetic care must start with understanding, not just treating.
“Aging is not a disease we need to cure,” Co said. “It is a biological process. As physicians, our role is to understand what is changing beneath the surface, how those changes differ from person to person, and whether intervention is appropriate in the first place.”
“When you only look at the wrinkle, you are looking at the surface of a much bigger anatomical process,” he added. “The face ages as a system. Good assessment means understanding what is happening underneath before deciding what should be done on the surface.”
Part of that understanding is recognizing that no two faces age the same way. Two people can be the same age and experience aging very differently. Genetics, skeletal structure, fat distribution, skin characteristics, sun exposure, lifestyle, and environmental factors all influence how aging presents.
“Two patients can be the same age and come to me with completely different anatomy, lifestyles, concerns, and goals,” Co said. “Why would we expect their treatment plans to look exactly the same?”
This is where healthy aging broadens the conversation — from fixing isolated signs to looking at the face as a whole and listening to what the individual actually wants.
“Someone can want to look refreshed without wanting to look 20 years younger,” Co said. “Those are completely different goals.”
Rather than trying to freeze one version of the face forever, healthy aging acknowledges that the face will continue to change. As different structures change at different rates, the relationship between features evolves. Facial harmony is therefore not fixed.
“You cannot freeze one version of your face forever,” Co said. “But you can understand how the face is changing and make decisions that respect its natural proportions and your identity.”
In the age of social media, where aesthetic treatments are highly visible, Co cautions against self-diagnosis.
“Patients should not have to diagnose themselves from social media,” he said. “You might recognize a concern, but deciding why it is happening and what should be done about it requires proper assessment.”
The shift is also about how people feel, not just how they look. A 2022 review on minimally invasive facial aesthetic procedures found studies are increasingly looking beyond physical changes to include satisfaction with appearance and aspects of psychological and social well-being, while noting that evidence still needs careful interpretation.
For Co, this reinforces that success is not always about looking dramatically younger.
“We need to ask whether the result makes sense for the patient, whether expectations were met, and whether we preserved the things that make that person recognizable,” he said. “I would rather someone tell my patient, ‘You look well,’ than immediately ask, ‘What did you have done?'”
At Cosma Institute, Co applies this consultation-led philosophy through individualized assessment, facial harmony, medical judgment, and patient education. Having trained aesthetic practitioners across Southeast Asia and Europe, he advocates for natural-looking outcomes that respect the characteristics already present in each face — an approach that recently earned him two awards at the Merz Aesthetics Tala Awards.
For Co, the evolution of aesthetic medicine is not about having more tools, but knowing when to use them — and when not to.
“Aging cannot be stopped, and I don’t think that should be the promise,” he said. “What we can do is understand it better. We can look at the science, understand the anatomy, listen to the patient, and make decisions that allow them to age while still looking recognizably like themselves.”
For Co, healthy aging begins not with fighting age, but with understanding it.
NewsMakers
The look and feel of your neighborhood may affect your sleep
Those living in neighborhoods rated as having a stronger sense of safety tended to sleep longer, and that this rating appeared to be shaped by the streetscape.
Your neighborhood’s “streetscape”—the physical environment of your street—is something that you have probably never consciously thought about, despite seeing it every day. But what if the streetscape was affecting you on a subconscious level and disrupting your sleep?
This intriguing question is posed by the findings of a study led by Professor Daisuke Matsushita of the Graduate School of Human Life and Ecology at Osaka Metropolitan University. The research team used AI to analyze more than 200,000 Google Street View images to identify visual neighborhood characteristics. They then linked these characteristics to the self-reported sleep of 1,089 working adults living on the lower floors of apartments in Tokyo, who were most likely to be affected by the streetscape.
They found that those living in neighborhoods rated as having a stronger sense of safety tended to sleep longer, and that this rating appeared to be shaped by the streetscape. Generally, people slept longer in areas with lots of greenery, such as leafy trees, on the street. Similarly, high “enclosure”—meaning many tall vertical buildings and few wide-open spaces—was also associated with longer sleep and fewer insomnia symptoms.
However, the study also made a surprising finding. The researchers found that highly walkable streetscapes, such as those with more sidewalks and traffic signs, were associated with a lowered sense of safety and shortened sleep duration.
This suggests that walkability does not always represent a reassuring environment. Instead, a possible explanation is that streets with extensive pedestrian infrastructure are often busier, more crowded, and used by more strangers, which may be perceived as less safe or less relaxing than quieter residential streets.
“This study demonstrates the potential for evaluating streetscape characteristics across large geographic areas in a cost-effective manner,” Dr. Matsushita said. “Based on the technique used in this study, cities could potentially measure perceived safety, beauty, liveliness, and enclosure as well as pollution and noise.”
“We hope that opening up this new perspective creates further possibilities for designing healthier neighborhoods,” he concludes.
The findings were published in Building and Environment.
NewsMakers
Workout or nap? Either can help your sleepless brain, study finds
People who either completed 20 minutes of moderate-to-vigorous exercise or took a 90-minute nap performed about 22 per cent better on memory tests after 30 hours without sleep than those who did neither.
A short workout or a nap can help protect memory after a sleepless night, a McGill University-led study has found.
Researchers found people who either completed 20 minutes of moderate-to-vigorous exercise or took a 90-minute nap performed about 22 per cent better on memory tests after 30 hours without sleep than those who did neither. The findings, published in Proceedings of the National Academy of Sciences (PNAS), point to practical ways to counter the effects of sleep deprivation.
“Sleep loss affects nearly every aspect of how we think and function, but many people can’t simply stop what they’re doing and get more sleep,” said senior author Marc Roig, Professor in McGill’s School of Physical and Occupational Therapy. “Our findings show that even a brief bout of exercise may help preserve one of our most important cognitive abilities.”
The study involved 54 healthy young adults who stayed awake for 30 consecutive hours under lab supervision. Participants were then assigned to one of three groups: a 20-minute cycling session, a 90-minute nap or a control condition. Three days later, researchers tested their memory for images they had viewed immediately after the intervention. Those who exercised or napped remembered significantly more images than participants who did neither.
Same result, different pathways
While the memory benefits were nearly identical, brain recordings revealed that exercise and napping helped in different ways.
Napping appeared to help the brain recharge, making it easier to take in and remember new information. Exercise, by contrast, helped the brain use its remaining resources more efficiently, without making participants feel more tired.
The findings could eventually inform fatigue-management strategies in workplaces where sleep loss is common and mistakes can have serious consequences, such as health care, transportation and emergency response.
“A nap isn’t always possible in the middle of a shift,” said first author Madhura Lotlikar, a doctoral candidate in McGill’s Department of Neurology and Neurosurgery. “Exercise is accessible, inexpensive and easy to implement. That makes it a promising tool to help people stay cognitively sharp when sleep is limited.”
The researchers emphasize that exercise cannot replace sleep, but it may help people function better when getting enough rest isn’t possible.
About the study
“Protecting episodic memory after sleep loss: Similar benefits of exercise and naps via distinct neural contributions” by Madhura Lotlikar and Marc Roig et al., was published in Proceedings of the National Academy of Sciences of the United States of America.
