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Objectives: Excessive consumption of sugar-sweetened beverages (SSBs) contributes to adverse health outcomes but is differentiated by socio-economic indicators. The study analyses the educational disparities in adults frequent consumption of sugar-sweetened beverages (SSBs) in Estonia and its temporal changes between 2006 and 2022., Study Design: Repeated cross-sectional survey., Methods: Nationally representative data from 9 biennial cross-sectional surveys on 25-64-year-old Estonian residents (n = 20396) was used for the study. Changes in frequent (on 6-7 days per week) consumption of SSBs by study year, sex, age, and education is analysed using descriptive statistics and binomial logistic regression. Prevalence and odds ratios (OR) with 95 % confidence intervals (CIs) are presented focusing on temporal and educational patterns in frequent SSB consumption., Results: The prevalence of frequent SSB consumption among Estonian adults declined consistently from 2006 (14.0 %) to 2018 (5.2 %), followed by statistically non-significant increases in 2020 (6.8 %) and 2022 (7.1 %). Prevalence of frequent SSB consumption was significantly (p < 0.01) higher among adults with primary or lower education (12.4 %) compared to tertiary education group (4.8 %). The educational differences in SSB consumption (12.4 % in primary or lower vs. 4.8 % in tertiary education) were nearly three-fold after adjusting for sex, age, and period effects (OR 2.84, 95 % CI 1.71-4.74) and have been consistent since 2010., Conclusions: Although frequent consumption of SSBs has been generally decreasing among Estonian adults, the findings illustrate the persisting educational gradients in exposure that expectedly translates into socio-economic inequalities in adverse health outcomes resulting from excessive SSB consumption., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2024 The Authors. Published by Elsevier Ltd on behalf of The Royal Society for Public Health.)