Had 36 years of career in WHO, working at all 3 levels (global, regional and country level) of the Organization. After serving as the Coordinator (Head) of Nutrition Policy and Scientific Advice Unit of the WHO Department of Nutrition for Health and Development for 10 years, served as the Head of the Cross-Cutting Unit of Safe, Healthy and Sustainable Diet at the newly merged WHO Department of Nutrition and Food Safety from 2020 to 2023 and continued to lead the development of WHO guidance and scientific advice on diet, nutrition and health addressing in particular the dietary risk factors for the prevention and control of obesity and noncommunicable diseases (NCDs). Also served as the Head of the WHO delegation at the Codex Committees on Nutrition and Food for Special Dietary Uses (CCNFSDU) and Food Labelling (CCFL) for the last 20 years, leading and ensuring policy coherence in the development of Codex standards and guidelines not only to protect food safety, but also to improve food quality to address increasing global public health problems and global burden of obesity and diet-related NCDs. During 2019 - 2023, served as the Chair of the Cochrane Nutrition Advisory Board which guided the strategic direction of the work of Cochrane Nutrition. Received the 2023 Asia Pacific Clinical Nutrition Society Award for a remarkable contribution to the nutrition-related health and wellbeing of peoples in the Asia Pacific region and beyond. From March 2023 to March 2024, served as a member of the US National Academies of Sciences, Engineering and Medicine (NASEM)’s Committee for Use of Meta-Analyses in Nutrition Research and Policy. Since December 2024, serving as the President of the Asia Pacific Clinical Nutrition Society (APCNS) and since January 2024, serving as the Co-Editor of the Asia Pacific Journal of Clinical Nutrition. Currently working as Visiting Professor of the Graduate School of Nutrition Science at Japan Nutrition University; the Graduate School of Public Health at International University of Health and Welfare; and the Faculty of Health and Welfare at Takasaki University of Health and Welfare, while also providing technical support to various nutrition work of several WHO Regional Offices, in particular for South East Asia and the Western Pacific, and also to several Member States as nutrition science and policy expert.