Dietary environmental impacts of French adults are poorly related to their income levels or food insecurity status.

While there is a high inter-individual variability in the environmental impacts of diets, this variability was not related to income level or FI status for most indicators, except higher water use and freshwater eutrophication in higher-income populations. Overall, our results underline the importance of considering individual dietary patterns and thinking at the whole diet level, and not only considering specific food or food groups impacts, when designing educational tools or public policies to promote more sustainable diets.