Dr Nath is a clinician-scientist and Postdoctoral Research Fellow at the School of Dentistry, College of Health, based at the Australian Research Centre for Population Oral Health (ARCPOH) and the Indigenous Oral Health Unit at the Adelaide University. A periodontist by training, she holds a Bachelor of Dental Surgery and a Master of Dental Surgery (Periodontology). 
Dr Nath leads research in oral microbiome therapeutics and microbial gene technology, an emerging specialist field within oral microbiology. Her work centres on oral microbiome transplantation (OMT), a novel therapy that transfers a healthy donor's oral microbial community to a recipient with oral disease, aiming to treat and prevent dental caries and periodontal disease. Building on her pioneering doctoral research, she is working to translate OMT from the laboratory into clinical trials. Her long-term goal is to deliver a new generation of microbiome-based preventive care for Indigenous and socioeconomically disadvantaged communities, who carry a disproportionate burden of oral disease. Alongside this translational work, Dr Nath investigates how lifestyle and environmental factors, the "sociobiome", shape the oral microbiome and its links to broader health. Her research brings together clinical dentistry, microbiology, epidemiology and advanced data analysis.
Dr Nath is also leading work to bring evidence-based oral health care into the digital space. She is developing a teledentistry app for children and their caregivers that will provide families with practical, trustworthy guidance on preventing dental disease, along with improved access to professional support, particularly for those in regional and remote areas. 
Dr Nath has more than a decade of experience in fieldwork and data collection, including six years of partnership with Indigenous communities using culturally safe research practices. She led multiple projects involving Aboriginal and Torres Strait Islander participants across regional and remote South Australia, ensuring that every clinical examination and data-collection activity was conducted respectfully and in partnership with the community.
As an early-career researcher, Dr Nath has secured more than $80,000 in funding as Principal Investigator. She has published over 40 peer-reviewed articles, which have received more than 1,100 citations (h-index 17; i10-index 29; Google Scholar, 2026). She serves on the Editorial Board of BMC Oral Health.
Her research has received national and international recognition. She received the 2026 Judith Albino Award, the 2025 Derek Frewin Early Career Researcher Award, and the 2024 Hatton Award from the International Association for Dental, Oral, and Craniofacial Research (IADR), one of the most prestigious international honors for early-career dental researchers.