The rising prevalence of obesity in the United States is believed to be due to increased exposure to adverse environmental factors, such as food portion sizes and increased dietary variety. Although decreasing portion sizes is a strategy used in weight loss programs, research has not studied the effects of decreasing dietary variety. Cross-sectional studies show a positive association between variety and body weight and in our own studies we have shown that greater reductions in the number of different snack foods (i.e. cookies, chips) consumed predicted greater decreases in overall caloric and fat intake and greater weight loss. Limiting variety may reduce intake through long-term sensory-specific satiety and/or monotony. Reducing dietary variety is a novel dietary approach with the potential to improve long-term weight loss, which has not been studied as a clinical strategy in obesity research. The objective of this application is to conduct a randomized controlled trial of a behavioral weight loss intervention limiting the number of different snack foods consumed. Two hundred overweight and obese participants will be randomized to a standard behavioral intervention (Standard) or to a standard behavioral intervention that also limits the number of different snack foods consumed (Limited Variety). Both conditions will receive an 18-month standard behavioral intervention, using behavioral techniques (i.e., self-monitoring) to change eating behaviors. Participants in the Limited Variety condition will also limit variety in snack foods to only two chosen snack foods throughout the intervention. Measures of weight, snack food consumption and hedonics, and diet satisfaction will be taken at 0, 6, 12, and 18 months. This investigation will determine: 1) if the Limited Variety condition produces greater weight loss than the Standard condition at 18 months; 2) if the Limited Variety condition consumes fewer servings and calories from snack foods than the Standard condition; and 3) if limiting snack food variety produces long-term sensory-specific satiety and/or monotony. Relevance: Experimental studies show that limiting dietary variety profoundly reduces intake. To date, there is no dietary prescription that has been tested that capitalizes on the effect of variety on intake that can be maintained. This will be the first investigation to examine methods of manipulating dietary variety that can be adhered to over time and that influence intake, weight loss, and weight loss maintenance. ? ? ?

Agency
National Institute of Health (NIH)
Institute
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Type
Research Project (R01)
Project #
1R01DK074721-01
Application #
7083801
Study Section
Psychosocial Risk and Disease Prevention Study Section (PRDP)
Program Officer
Kuczmarski, Robert J
Project Start
2006-04-10
Project End
2010-03-31
Budget Start
2006-04-10
Budget End
2007-03-31
Support Year
1
Fiscal Year
2006
Total Cost
$296,523
Indirect Cost
Name
Miriam Hospital
Department
Type
DUNS #
063902704
City
Providence
State
RI
Country
United States
Zip Code
02906
Vadiveloo, M; Parker, H; Raynor, H (2018) Increasing low-energy-dense foods and decreasing high-energy-dense foods differently influence weight loss trial outcomes. Int J Obes (Lond) 42:479-486
Buscemi, Joanna; Rybak, Tiffany M; Berlin, Kristoffer S et al. (2017) Impact of food craving and calorie intake on body mass index (BMI) changes during an 18-month behavioral weight loss trial. J Behav Med 40:565-573
Sheikh, Vaishali Keshani; Raynor, Hollie A (2016) Decreases in High-Fat and/or High-Added-Sugar Food Group Intake Occur when a Hypocaloric, Low-Fat Diet Is Prescribed Within a Lifestyle Intervention: A Secondary Cohort Analysis. J Acad Nutr Diet 116:1599-605
LaRose, Jessica Gokee; Fava, Joseph L; Steeves, Elizabeth A et al. (2014) Daily self-weighing within a lifestyle intervention: impact on disordered eating symptoms. Health Psychol 33:297-300
Buscemi, Joanna; Murphy, James G; Berlin, Kristoffer S et al. (2014) A behavioral economic analysis of changes in food-related and food-free reinforcement during weight loss treatment. J Consult Clin Psychol 82:659-69
Raynor, Hollie A; Bond, Dale S; Steeves, Jeremy et al. (2014) Physical activity variety, energy expenditure, and body mass index. Am J Health Behav 38:624-30
Pinto, Angela Marinilli; Fava, Joseph L; Raynor, Hollie A et al. (2013) Development and validation of the weight control strategies scale. Obesity (Silver Spring) 21:2429-36
Raynor, Hollie A; Steeves, Elizabeth A; Hecht, Jacki et al. (2012) Limiting variety in non-nutrient-dense, energy-dense foods during a lifestyle intervention: a randomized controlled trial. Am J Clin Nutr 95:1305-14
Raynor, Hollie A (2012) Can limiting dietary variety assist with reducing energy intake and weight loss? Physiol Behav 106:356-61
Raynor, Hollie A; Van Walleghen, Emily L; Bachman, Jessica L et al. (2011) Dietary energy density and successful weight loss maintenance. Eat Behav 12:119-25

Showing the most recent 10 out of 14 publications