Mapping the Consumption of Fermented Foods Across Europe

A recent study published in the British Journal of Nutrition has examined the consumption patterns and prevalence of fermented foods across 53 European countries. Conducted as part of the Promoting Innovation of Fermented Foods project, the research sought to clarify how frequently and in what quantities diverse fermented items are consumed throughout different European regions. While public and scientific interest in fermented products has grown due to their potential roles in nutrition and gut health, comprehensive dietary data across broad demographic groups has historically been scarce.

Understanding the Scope of the European Survey

The cross-sectional study collected survey data online between October 2023 and May 2024. Researchers analyzed responses from 12,646 adult participants residing in four primary geographic regions: Northern, Central-Eastern, Western, and Southern Europe. To gather detailed consumption metrics, participants completed a specialized fermented food frequency questionnaire. This tool incorporated validated food images to assist respondents in accurately estimating their standard portion sizes. The survey encompassed 15 primary food categories, including dairy, vegetables, cereals, beverages, and certain items like coffee and chocolate, which involve fermentation processes during production even if the final items do not contain live microorganisms.

Regional Variations in Consumer Prevalence

The findings revealed that the proportion of people reporting consumption differed significantly by region for 14 out of the 15 evaluated food groups. Fermented dairy products were the sole exception, demonstrating high and consistent consumer prevalence across all investigated territories. Specifically, between 94.1% and 95.6% of respondents reported consuming fermented dairy, with median intakes among consumers ranging from 66.7 to 80.1 grams per day.

The researchers categorized consumer prevalence into distinct tiers:

• High prevalence, defined as 75% or more of respondents, which included chocolate, fermented dairy, fermented vegetables, fermented cereals, and coffee across all four regions.
• Moderate prevalence, spanning 50% to 75% of respondents.
• Low prevalence, covering less than 50% of the population, which frequently applied to plant-based dairy or meat alternatives, fermented tea, and cocoa beverages.

Quantities consumed also varied widely. For example, fermented vegetables showed some of the lowest daily intakes, ranging from 4.4 to 8.4 grams daily, whereas coffee intake among consumers sat between 51 and 100 milliliters per day.

Limitations and Future Dietary Guidance

The authors of the study acknowledged several methodological limitations that affect the interpretation of the results. The reliance on self-reported dietary intake introduces potential recall bias, and the use of non-random recruitment methods means the sample may not fully represent the general population. Furthermore, the survey did not measure live microorganisms at the point of consumption or directly assess specific health outcomes linked to these foods. Because consumption behaviors and product availability differ markedly across borders, the researchers suggest that region-specific nutritional guidance may prove more effective than broad, pan-European dietary recommendations.