| Summary: | Background The incidence of dementia is gradually increasing in China. Lifestyle is an important modifiable factor for dementia, and the health belief model can be widely used to explain and predict health-related behaviors. Objective To analyze the impact of dementia prevention beliefs on health promoting lifestyle in Chinese adults, providing a scientific basis for the development of targeted dementia prevention regimens based on the health belief model. Methods An online survey was used for collecting data including sociodemographics, dementia-related knowledge and prevention beliefs as well as health promoting lifestyle level of 1 202 Chinese adults using a self-developed electronic questionnaire〔consisting of general information questionnaire, dementia prevention knowledge questionnaire (DPKQ), Chinese version of the Motivation to Change Lifestyle and Health Behaviors for Dementia Risk Reduction (MCLHB-DRR) scale, and Chinese version of the revised Health Promoting Lifestyle ProfileⅡ (HPLP-Ⅱ R) 〕from February to March 2020. Multiple linear regression was used to analyze the effect of dementia prevention beliefs on health-promoting lifestyle. Results A total of 1 201 cases returned responsive questionnaires, with a response rate of 99.92%. The average score of DPKQ of the respondents was (7.46±2.85), and the rate of correctly answering the questions in DPKQ was 67.82%. The average total score and average item score of the MCLHB-DRR in the respondents were (92.67±12.68), and (3.43±0.47), respectively. The average total score of HPLP-Ⅱ R was (100.00±15.81). The HPLP-Ⅱ R scores were affected by five domain scores of the Chinese version of MCLHB-DRR (perceived susceptibility, perceived benefits, perceived barriers, self-efficacy and general health motivation), the total score of DPKQ, living area (rural or urban), education level and the history of contacting with dementia patients. Conclusion The health promoting lifestyle of adults is partially affected by partial dimensions of dementia prevention beliefs and some sociodemographic characteristics. Therefore, health care workers can provide preventive interventions for adults to prevent dementia based on the relationship between the health belief model and health-related behaviors.
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