Cent Eur J Public Health 2024, 32(2):101-107 | DOI: 10.21101/cejph.a7994

Dietary intake of plant polyphenols: Exploring trend in the Czech population

Pavel Sedláček1, Monika Bludovská1, Iveta Plavinová1, Anna Zavaďáková1, Luděk Müller2, Dana Müllerová1
1 Department of Hygiene and Preventive Medicine, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
2 Department of Cybernetics, NTIS, University of West Bohemia in Pilsen, Pilsen, Czech Republic

Objectives: This study aimed to determine trend in polyphenol consumption in the Czech Republic during the last three decades. Additionally, it provides a brief overview of the beneficial effects of polyphenols in several body systems.

Methods: Data from the Phenol-Explorer 3.6, a specialized database of polyphenolic substances, were assigned to the resources of the Czech Statistical Office on the consumption of food and beverages in the Czech Republic for the years 1989-2022. The average daily intake of polyphenols was determined by multiplying the average annual consumption of each type of food by the polyphenol content obtained from the database; results were given in milligrams of polyphenols per inhabitant and day. Since the food items in the data sources are not identical, it was necessary to create an extensive model of food categories.

Results: The current value of polyphenol intake is 1,673 mg per day per inhabitant; however, this level most likely reflects methodological underestimation. The favourable increase in dietary polyphenol intake in the Czech population - doubling, to be precise - which we observed from 1989 to 2007, has been replaced by the opposite trend in the last 15 years. The current intake of polyphenols corresponds to the level that was already achieved in 2004. Hydroxycinnamic acids (from the group of phenolic acids) are the most prevalent dietary polyphenols, followed by flavanols (from the group of flavonoids). The most frequent source of polyphenols in the Czech population are non-alcoholic beverages such as coffee, tea and juices, followed by fruits, cereals, and vegetables, respectively.

Conclusion: Current trend of dietary polyphenol intake in the Czech population is slightly decreasing. This tendency, lasting since 2008, is indisputably negative. Plant polyphenols offer opportunities for inexpensive interventions in health promotion.

Keywords: polyphenols, dietary habits, prevention, non-communicable diseases, phytochemicals

Received: July 28, 2023; Revised: June 14, 2024; Accepted: June 14, 2024; Published: June 30, 2024  Show citation

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Sedláček P, Bludovská M, Plavinová I, Zavaďáková A, Müller L, Müllerová D. Dietary intake of plant polyphenols: Exploring trend in the Czech population. Cent Eur J Public Health. 2024;32(2):101-107. doi: 10.21101/cejph.a7994. PubMed PMID: 39069313.
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