Background and objectives Few studies have described the evolution of diet-related environmental pressures at the individual level, with greenhouse gas emissions (GHGe) and land occupation (LO) dominating the scientific literature. The present study aims to evaluate trajectories of the environmental pressures of diets over 8 years, a recent period in which awareness of the environmental crisis has increased. Methods Dietary data were collected using a food frequency questionnaire distinguishing between organic and conventional foods in a sample that completed the questionnaire three times (2014, 2018, 2022). Environmental indicators at the farm perimeter were estimated for organic and conventional farming using a multi- source approach. Latent class models were used to identify trends in pressures related to food production, as well as in a synthetic Environmental Pressure Indicator (EPI) comprising standardized values for GHGe, LO, energy demand, agroecological infrastructure, water withdrawal, and pesticide footprint. Indicator trajectories were modeled using mixed models adjusted for energy intake and gender. Results Over the study period (2014-2022), in the whole sample (n=8,905) environmental pressures, except for water withdrawal, decreased by 8-12%, with the EPI decreasing by 9.1%. Two to four distinct trajectory profiles were identified for individual indicator, with most participants showing stable or declining trends in pressures, except for water withdrawal, where two main profiles showed either increasing or decreasing trends over time. Globally, 4 different trajectories were identified for EPI. Dietary changes driving EPI variations included increased meat consumption among participants with rising EPI over time and increased plant- based consumption alongside reduced meat consumption among those with declining EPI over time. Conclusions This study highlights that, despite growing awareness of sustainable diets, most individuals maintained stable diet-related environmental pressures, with only a minority showing significant increases or decreases over the 8-year period. These findings emphasize the need for strong and urgent targeted public policies and communication strategies to promote sustainable dietary shifts, particularly by addressing sociocultural, economic and commercial barriers to environmentally sustainable diets.