The prevalence of chronic disease is increasing world-wide1. Dietary lifestyle modification is considered a cornerstone of chronic disease prevention and/or management2,3. Meeting Australian dietary guidelines recommendations can improve health and wellbeing, and reduce the risk of developing many chronic conditions4,5. The study aim was to compare dietary intake across the five food groups, macronutrient and micronutrient between participants with self-reported chronic conditions, risk factors to chronic condition and those without self-reported risk factors or chronic condition, based on dietary intake data using the Australian Eating Survey®–Heart version (AES-Heart®). This cross-sectional secondary analysis includes baseline survey data from phase one of a longitudinal study. Ethics approval was received from the University of Newcastle Human Research Ethics Committee (H-2023-0414). Eligible participants were Australian adults (≥18 years), while those who were pregnant, breastfeeding or unable to speak English were excluded. For this cross-sectional secondary analysis, participants were categorised into three comparable groups based on self-reported disease status: diagnosed with a chronic conditions (“Diagnosed conditions”), diagnosed with a risk factor for chronic conditions (“At risk”), and not diagnosed with either a chronic condition or risk fact (“Without diagnosis”). Dietary intake was assessed using the AES-Heart® Food Frequency Questionnaire. Nutrient intakes were estimated using the AUSNUT 2011-13 database. Nutritional adequacy was evaluated using the Australian Guide to Healthy Eating, and Nutrient Reference Values, with diet quality assessed by Australian Recommended Food Score. The proportion of participants meeting age- and sex-specific recommendations for macro- and micronutrients (EARs, AIs, AMDRs, where applicable) was compared between groups using chi-square tests. Differences in total energy intake (kJ/day) and ARFS scores were assessed using Kruskal-Wallis tests. Statistical significance was set at p <.05. A total of 610 participants were included in analyses across all three groups: Without diagnosis (n = 161), At-risk (n = 59) and Diagnosed conditions (n = 390). No participants in our sample met the recommendations for all food groups. There was a significantly (p = 0.047) greater proportion of participants in the Diagnosed condition group who met AGHE recommendations for breads and cereals (16%), compared to Without diagnosis (6%) and At-risk (10%) groups. Sex-stratified analyses showed no significant group differences for males (p > 0.05), whereas females result approached significance (p = 0.051). Total ARFS scores were not significantly different between groups. There was a significant between group difference for males (p = 0.042), where those in the At-risk group had a higher prevalence of meeting the guidelines (70%) compared to Without diagnosis (56%) and Diagnosed condition (37%) groups. Energy intake and the proportion meeting macro- and micronutrient recommendations did not differ significantly between groups (p ≥.05). These findings suggested that dietary intake, diet quality, and adherence to dietary recommendations were low, but similar between groups.