Nutrition knowledge in the obese and overweight

Area of Science:

• Nutrition Science
• Public Health
• Clinical Medicine

Background:

• Obesity and overweight are significant public health concerns.
• Understanding the relationship between health knowledge and weight management is crucial.
• Existing knowledge assessment tools may not fully capture nuances in different patient populations.

Purpose of the Study:

• To develop and validate a questionnaire assessing nutrition, health care, and exercise knowledge.
• To compare knowledge scores between obese/overweight individuals and other patient groups.
• To investigate the correlation between health knowledge and weight status, and identify potential limiting factors in weight control.

Main Methods:

• Development and validation of a 20-question multiple-choice questionnaire (Cronbach alpha 0.83).
• Application of the questionnaire to diverse patient groups including obese, overweight, hospital patients, and out-patients.
• Statistical analysis to compare knowledge scores across groups, controlling for age and sex.

Main Results:

• Obese and overweight individuals scored significantly higher (63.5%) on the knowledge questionnaire compared to other hospital patients (50.2%) and out-patients (47.7%).
• No significant difference in scores was observed between hospital clinic and community-presenting patients, despite weight differences.
• Knowledge scores showed no direct relationship with weight, and overweight patients with non-insulin-dependent diabetes mellitus scored poorly (42.3%).

Conclusions:

• Good nutrition and health care knowledge does not necessarily translate to effective weight control.
• Other factors appear to limit weight management in the studied population.
• The validated questionnaire can be used to evaluate knowledge changes following nutrition education and their potential link to weight loss.