Effectiveness of a Self-health Assessment Mobile Application in Young-to-midlife Adults in Hong Kong

This project aims to compare the effectiveness of Wellnuts, an evidence-based, algorithm-driven self-health assessment mobile application, in empowering asymptomatic young-to-midlife adults in Hong Kong, promoting health awareness, and improving health-seeking behaviour and linkage-to-care, compared with conventional web-based health resources. Participants will be randomly allocated to the mobile health intervention group (Wellnuts app with self-health assessment and health information) and the conventional web-based resources control group (health information from Centre for Health Protection website). Hopefully, population health will be improved with the general health promotion impact from the app.

Inclusion Criteria: * Hong Kong residents self-reported age of 25-65 years; * Possesses a smartphone capable of running mobile apps (e.g. Android or iPhone) and; * Able to read either English or Chinese. Exclusion Criteria: * Individuals having any symptoms or feeling unwell in anyways as detailed in the Disclaimer at the launch of the app; or * Individuals reporting a current diagnosis of cardiovascular disease, lung cancer, hepatitis B, colorectal cancer, diabetes, sexually transmitted diseases, depression, anxiety and mild cognitive impairment and memory loss.