Dietary Consumption of Polyphenols in University Students—Relationship with Their Health-Related Habits

Polyphenols are compounds derived from plants found in foods with potential health benefits due to their antioxidant properties. The aim of this study was to establish the consumption of polyphenols in university students and the relationship between the amount of polyphenols consumed and their health-related habits. For this, 270 university students answered a validated food consumption frequency questionnaire (FFQ), a physical activity questionnaire (IPAQ), and a health and lifestyle questionnaire. From the FFQ, the daily consumption of classes and subclasses of polyphenols was calculated. Then, the population was classified in terciles according to the polyphenol consumption, and the physical activity, smoking habits, and the prevalence of allergy and obesity in each tercile was established. The consumption of polyphenols was about 1.5 g/day, being flavonoids and phenolic acids the most consumed. The main sources of polyphenol consumption were cocoa, coffee, and to a lesser extent, fruits. There were no significant differences in consumption according to sex, BMI, health status, or physical activity. The smoking habit was related to a high consumption of polyphenols, mainly those that came from coffee and cocoa. Students who smoke had a higher consumption of polyphenols with respect to nonsmokers, especially those derived from coffee.