Relationship Between Nutrition Knowledge and Obesity in Southern California Adults
Master of Science in Nutrition and Dietetics Research Reports 2018
Over one third of the adult population in the U.S. are obese placing them at higher risk for morbidity or mortality.
To determine if lack of nutrition knowledge has a positive impact on eating behaviors using obesity status as an indicator.
Participants completed the General Nutrition Knowledge Questionnaire (GNKQ), Anonymous Demographic Questionnaire (ADQ), and anthropometric measurements were taken during a one-time meeting lasting about one hour.
Data collection was completed on 334 participants between the ages of 18-55 years in a southern California community sample.
Anthropometric measurements were collected by the research team and consisted of waist circumference, height, weight, and Bio-impedance analysis.
Main Outcome Measures
Questionnaires were scored by the researchers using a predefined answer guide.
Statistical Analyses Performed
Statistical analysis was completed using Mann-Whitney Test for multiple comparisons.
There was no significant difference between mean GNKQ % score for gender (p=.21); Table 1. There was a significant difference between mean GNKQ % score for the age group and income (p=.02 and p=.04, respectively); Table 1. There was a significant difference between GNKQ % score for normal vs. overweight BMI class (p=.001) and with overweight vs obese BMI class (p=.001); Table 2. There was no significant difference between mean GNKQ % score for male waist circumference < 40 vs. ≥ 40 (p=.49). However, there was a significant difference between mean GNKQ % score for female waist circumference <35 vs. ≥ 35 (p=.002); Table 2.
Obesity is multifactorial and thus cannot be pinned on any one factor such as diet, exercise or nutrition knowledge. There is potential benefit to implement nutrition intervention during this obesity epidemic. Our findings suggest that participants who were obese, had lower nutrition knowledge than those who were of normal BMI. Lack of nutrition knowledge may be one of the many contributing factors for obesity.
Nutrition and Dietetics
Nutrition and Dietetics
School of Allied Health Professions
Master of Science (MS)
Year Degree Awarded
Date (Title Page)
Library of Congress/MESH Subject Headings
Health Knowledge, Attitudes, Practice; Obesity/psychology; Nutrition Surveys
Obesity; Nutrition Knowledge; Southern California; Nutrition Surveys
Loma Linda University Libraries
This title appears here courtesy of the author, who has granted Loma Linda University a limited, non-exclusive right to make this publication available to the public. The author retains all other copyrights.
Keay, Tatiana; Larson, Tonya; and Herrera, Claudinne, "Relationship Between Nutrition Knowledge and Obesity in Southern California Adults" (2018). Loma Linda University Research Reports. 16.
Loma Linda University Research Reports
Loma Linda University. University Libraries.