Breaking News
March 21, 2019 - Mutations in noncoding genes could play big role in regulating cancer, study finds
March 21, 2019 - A medical student’s thoughts on Match Day
March 21, 2019 - Are eggs good or bad for you?
March 21, 2019 - New analysis reveals precision oncology insights for colorectal cancer
March 21, 2019 - Pollutants appear to weaken immune system and increase pathogen virulence
March 21, 2019 - Researchers develop and validate scale for rating severity of mononucleosis
March 21, 2019 - Scientists identify generation of key immune response in mice on introducing solid food
March 21, 2019 - New nanomaterial could restore internal structure of damaged bones
March 21, 2019 - Selective destruction of prostate tumor as effective as complete prostate removal
March 21, 2019 - 2011 to 2015 Saw Increase in Psychiatric ED Visits for Youth
March 21, 2019 - Tapeworm drug targets common vulnerability in tumor cells
March 21, 2019 - Off the beaten path for global health residency
March 21, 2019 - European Parliament’s report calls on EU to develop policies to regulate endocrine-disrupting chemicals
March 21, 2019 - Women with undiagnosed diabetes in pregnancy more likely to experience stillbirths
March 21, 2019 - Fish consumption can help prevent asthma, study reveals
March 21, 2019 - Royal Holloway professors to lead new to research into curing Neurofibromatosis type 1
March 21, 2019 - NSF offers grant to improve treatment approaches for pelvic organ prolapse
March 21, 2019 - Your Apple Watch Might Help Spot a Dangerous Irregular Heartbeat
March 21, 2019 - Research team uncovers critical new clues about what goes awry in autistic brains
March 21, 2019 - From March Madness to medicine with help from mentors
March 21, 2019 - Mental health disorders among young adults may be on the increase
March 21, 2019 - New study examines smarter automatic defibrillator
March 21, 2019 - UC Riverside research shows how natural selection favors cheaters
March 21, 2019 - Mother’s diet during pregnancy can impact lung-specific genes of her offspring
March 21, 2019 - AeroForm Tissue Expanders makes breast reconstruction after mastectomy more comfortable
March 21, 2019 - New project focuses on creating more responsive, intuitive prosthetics
March 21, 2019 - New case study describes adolescent patient with rapid-onset schizophrenia and Bartonella infection
March 21, 2019 - Umass Amherst food scientist honored with 2019 Young Scientist Research Award
March 21, 2019 - Smell of skin could lead to early diagnosis for Parkinson’s
March 21, 2019 - Difference in brain connectivity may explain autism spectrum disorder
March 21, 2019 - Untangling the microbiome — with statistics
March 21, 2019 - Human microbiome metabolites enhance colon injury by enterohemorrhagic E. coli, study shows
March 21, 2019 - Written media can improve citizens’ understanding of palliative care
March 21, 2019 - New research aims to find how asthma symptoms are aggravated
March 21, 2019 - New $9.7 million NIH grant project seeks to improve hearing restoration
March 21, 2019 - Researchers measure brain metabolite levels in people with mild memory problems
March 21, 2019 - FDA approves first drug for treatment of postpartum depression in adult women
March 20, 2019 - Gene editing and designer babies experiments face global moratorium
March 20, 2019 - Major scientific study of wound care dressings wins ‘Best Clinical or Preclinical Research Award’
March 20, 2019 - Biohaven Enrolls First Patient In Phase 3 Generalized Anxiety Disorder (GAD) Trial Of Troriluzole
March 20, 2019 - Big data study identifies drugs that increase risk of psychosis in youth with ADHD
March 20, 2019 - Mystery novel and dream spur key scientific insight into heart defect | News Center
March 20, 2019 - Study measures impact of policies designed to reduce air pollution in two mega-cities
March 20, 2019 - Mild sleep apnea during pregnancy changes sugar levels and may affect infant growth patterns
March 20, 2019 - SSB and Novasep collaborate to develop new membrane chromatography systems
March 20, 2019 - Leaky valve repair improves quality of life in heart failure patients
March 20, 2019 - Diattenuation Imaging offers structural information of difficult to access brain regions
March 20, 2019 - Early sports specialization linked to increased injury rates during athletic career
March 20, 2019 - Study brings clarity about milk intake for children with Duarte galactosemia
March 20, 2019 - Allergan Announces FDA Acceptance of New Drug Application for Ubrogepant for the Acute Treatment of Migraine
March 20, 2019 - Maternal smoking during pregnancy increases risk of ADHD among offspring up to three-fold
March 20, 2019 - Pioneering pediatric kidney transplant surgeon Oscar Salvatierra dies at 83 | News Center
March 20, 2019 - F.D.A. Approves First Drug for Postpartum Depression
March 20, 2019 - TB remains a major public health challenge in the European region
March 20, 2019 - Most pills contain common allergens, warn experts
March 20, 2019 - Researchers discover previously unknown mechanism by which cells can sense oxygen
March 20, 2019 - World’s leading source of data on diagnosis, treatments for aortic dissection
March 20, 2019 - Breast cancer relapse predictor may soon be a reality
March 20, 2019 - Researchers identify origin of chronic pain in humans
March 20, 2019 - Two-drug combinations containing calcium channel blocker significantly lowers BP
March 20, 2019 - King’s scientists to monitor air quality exposure of 250 children
March 20, 2019 - Active substance from plant could turn into a ray of hope against eye tumors
March 20, 2019 - Preventative cardioverter defibrillator implantation is of little benefit to kidney dialysis patients
March 20, 2019 - New method based on neurofeedback may reduce anxiety
March 20, 2019 - Study explores whether alcohol consumption can have an effect on arthritis
March 20, 2019 - Merck to collaborate with GenScript for plasmid and virus manufacturing in China
March 20, 2019 - FDA Approves Zulresso (brexanolone) for the Treatment of Postpartum Depression
March 20, 2019 - Study examines long-term opioid use in patients with severe osteoarthritis
March 20, 2019 - Retired Stanford professor Edward Rubenstein, pioneer in intensive care medicine, dies at 94 | News Center
March 20, 2019 - Aaron Diamond AIDS Research Center to Join Columbia University
March 20, 2019 - Call for halt to human gene editing and designer babies experiments
March 20, 2019 - Study illuminates how hot spots of genetic variation evolved in the human genome
March 20, 2019 - Roundworm study suggests alternatives for treatment of schizophrenia
March 20, 2019 - Sphingotec reports new applications of bio-ADM at 39th ISICEM
March 20, 2019 - Preventing falls through free community-based screenings for older adults
March 20, 2019 - AAOS: Supplement Use Low in Patients With Osteoporosis, Hip Fracture
March 20, 2019 - Does intensive blood pressure control reduce dementia?
March 20, 2019 - Nut consumption could be key to better cognitive health in older people
March 20, 2019 - Drinking hot tea associated with increased risk of esophageal cancer
March 20, 2019 - Androgen receptor plays vital role in regulating multiple mitochondrial processes
Choosing healthy foods more effective than trying to resist large high-calorie portions

Choosing healthy foods more effective than trying to resist large high-calorie portions

image_pdfDownload PDFimage_print

People are often told that eating everything in moderation can help them lose weight, but it is better to choose healthier foods than to try to eat less, according to Penn State researchers.

In a recent study, researchers measured how much participants ate when given meals that varied in portion size. Despite about one-third of participants having been trained in different strategies to manage food portions during a previous year-long weight loss trial, all participants ate more as portion sizes grew. Although the trained participants ate the same amount as the others, they tended to choose healthier foods and ended up consuming fewer calories overall.

“The results show that choosing healthy, lower-calorie-dense foods was more effective and more sustainable than just trying to resist large portions of higher calorie options,” said Faris Zuraikat, graduate student. “If you choose high-calorie-dense foods but restrict the amount that you’re eating, portions will be too small, and you’re likely to get hungry.”

Previous research has shown the power of the “portion size effect,” which is the tendency for people to eat more when larger portions are served and can result in people consuming more calories than they intended.

The researchers designed an intervention to help people counteract this effect, in which participants were taught strategies to control food portions and eat healthier. Zuraikat said he and the other researchers wanted to see if this training was effective in helping people control portions.

“We gathered a group of subjects who had extensive training on portion-control strategies to see if their response to increasing portion size of foods served at a meal differed from untrained individuals,” Zuraikat said. “We were also interested in whether those untrained individuals with overweight and obesity or normal weight differed in their response.”

The researchers recruited three groups of women to participate in the study: 34 controls with overweight, 29 controls with normal weight, and 39 who had previously completed a one-year weight loss trial emphasizing portion-control strategies. All participants visited the lab once a week for four weeks. During each visit, the researchers provided the same foods but increased the portion size of the foods in a randomized order across weeks.

Each meal consisted of foods with higher calorie density, like garlic bread, and lower calorie density, like salad. Foods were weighed before and after the meal to determine how much was eaten, and calorie intake was determined from these measures.

The researchers found that when they were given larger portions, participants in all three groups ate more. For example, when the portion size was increased 75 percent, the average amount consumed went up 27 percent.

However, the participants who received training consumed fewer calories overall than those who did not. Even though the participants in all three groups ate similar amounts of food, the participants who received training chose foods lower in calorie density.

“All the groups were served the same meals, but their food choices differed. The participants who went through the training consumed more of the lower calorie-dense foods and less of the higher calorie-dense foods than the untrained controls,” Zuraikat said. “Consequently, trained participants’ calorie intake was less than that of the control groups, whose intake didn’t differ by weight status.”

The researchers say the study — published in the journal Appetite — illustrates the strength of the portion-size effect while also suggesting easier, more sustainable strategies for managing calorie intake.

“The study supports the idea that eating less of the higher-calorie-dense foods and more of the nutritious, lower-calorie-dense foods can help to manage hunger while consuming fewer calories,” said Barbara Rolls, professor and the Helen A. Guthrie Chair of Nutritional Sciences, Penn State. “You still have a full plate, but you’re changing the proportions of the different types of foods.”

Source:

http://news.psu.edu/story/501607/2018/01/25/research/learning-make-healthy-choices-can-counter-effects-large-portions

Tagged with:

About author

Related Articles