Dr Moy teaches Epidemiology, Research Methodology and Evidence-Based Medicine to both undergraduate and postgraduate candidates. Her research interests include Translational Research in the prevention of non-communicable diseases (NCDs) in the community setting, Workplace Wellness and the effects of lifestyle behaviours on NCDs.  She is one of the World’s Top 2 % Scientists in the Stanford University’s list (2019, 2020, 2021, 2022 & 2023).  Her expertise in obesity research is ranked top 2.8% among the published authors worldwide on Obesity from 2010 through 2023 (ExpertScape). 

    Currently, she heads a cohort study comprising of almost 15,000 teachers from the Peninsular Malaysia (CLUSTer).  A biobank with serum, plasma and buffy coat was set up.  The study aims to determine the temporal relationship between lifestyle practices (smoking, diet and physical activity) and stress with cardiovascular diseases with repeated measurements over time.   A total of five DrPH, three PhD and one MMedSc candidates completed their studies with the CLUSTer baseline findings.  More than 10 Tier 1 and Tier 2 publications were published using the CLUSTer data set.  Currently follow up with the teachers is ongoing with three DrPH and one PhD candidates. 

Dr Moy is also actively involved in another study that works on the development of a mobile diet app using image capture as the dietary assessment method. This project is in collaboration with co-researchers in the field of Artificial Intelligence and Behavioural Science.  The goal is to have users monitor their diet and for researchers in the nutrition field to have a better tool in diet assessment. This project has won a Gold medal in the PECIPTA 2022 and a Silver medal in the International Awards, Malaysia Technology Expo (MTE) 2022.

    Dr Moy has generated research grants amounting to more than RM2 million. She published more than 100 manuscripts in peer review journals. She is also active in supervising research candidates.  To date, she has successfully supervised to completion 14 DrPH,  eight PhD, six MMedSc by Research and three Master of Public Health (Family Health) candidates.

    Dr Moy initiated and established the University of Malaya Wellness Program in 2008 and coordinated the program until 2013. She also co-ordinated the implementation of Clinical Epidemiology-Evidence Based Medicine module in the MBBS curriculum in 2008. She was the coordinator for the Master of Public Health program from 2018 to 2022.  Currently, she is the Head of the Centre for Epidemiology & Evidence Based Practice, Universiti Malaya.  She is the associate editor for Frontiers' Public Health. She also reviews manuscripts for both local and international journals.

She  actively engages with the media in health advocacy especially in the prevention of obesity and NCDs, promotion of healthy lifestyle and lately in the preventive measures of COVID-19 as well as promotion of COVID vaccination.