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A b s t r a c tBackground: Diet is a modifiable risk factor for cardiovascular disease (CVD). Aim:To assess diet quality in the adult Polish population, taking into consideration consumption of various nutrients as well as the total diet quality. Methods:Within the frame of the National Multicentre Health Survey (WOBASZ II), a random sample of the whole Polish population aged 20 years and above was screened during the years 2013-2014. Dietary habits were assessed in 5690 subjects (2554 men and 3136 women). Nutrient intakes were compared to the Dietary Reference Intakes. Total diet quality was measured using the Healthy Diet Indicator (HDI) score, based on the World Health Organisation recommendations for CVD prevention, that includes 7 nutrients (saturated and polyunsaturated fatty acids, cholesterol, protein, dietary fibre, fruits and vegetables, free sugars) and ranges from 0 (the least healthy diet) to 7 (the healthiest diet). Results:The studied group was characterised by a high prevalence of overweight and obesity (69% in men vs. 59% in women), hypercholesterolaemia (56% vs. 55%, respectively), hypertension (50% vs. 42%), and diabetes (12% vs. 10%). At the same time, a significant percentage of Poles had improper dietary habits. A low fat and low cholesterol diet was reported by only 8% and a low calorie diet by 1% of the respondents. Adding salt to already seasoned dishes was reported by 27% of men and 18% of women, and 56% and 30% of them, respectively, consumed meat products with visible fat. The diet of most adult Polish citizens was found to be not balanced. Vitamins A, C, E, B1, B2, B6, and B12, protein, dietary cholesterol and fruits/vegetables were consumed in recommended doses only by 44-80% of the respondents. The recommended intake of fat, saturated and polyunsaturated fatty acids, which significantly affect lipid levels, was found in 18-37% of the respondents. Dietary intakes of folate and minerals important for the prevention of hypertension were insufficient. The desired level of folate intake was found only in 13-26% of the respondents, and that of magnesium, calcium and potassium in 5-36% of them. The average HDI value was about 3.2 (out of the maximum of 7). A healthy diet (5-7 points) was noted in 15% of adult Poles. Most subjects (60%) were characterised by a low quality diet (0-3 points). Nevertheless, about 55% of respondents believed that their diet was appropriate. Conclusions:The quality of dietary habits of the majority of the adult Polish population falls far short of the recommendations relevant for CVD prevention.

The dietary acid load in the Polish adult population was relatively low. There was no independent relationship between dietary acid load and cardiovascular disease and its risk factors in the population under study, except for the positive association between the PRAL value and diabetes prevalence in females.

The primary aim of the study was to estimate the consumption of polyphenols in a population of 6661 subjects aged between 20 and 74 years representing a cross-section of the Polish society, and the second objective was to compare the intakes of flavonoids calculated on the basis of the two commonly used databases. Daily food consumption data were collected in 2003–2005 using a single 24-hour dietary recall. Intake of total polyphenols was estimated using an online Phenol-Explorer database, and flavonoid intake was determined using following data sources: the United States Department of Agriculture (USDA) database combined of flavonoid and isoflavone databases, and the Phenol-Explorer database. Total polyphenol intake, which was calculated with the Phenol-Explorer database, was 989 mg/day with the major contributions of phenolic acids 556 mg/day and flavonoids 403.5 mg/day. The flavonoid intake calculated on the basis of the USDA databases was 525 mg/day. This study found that tea is the primary source of polyphenols and flavonoids for the studied population, including mainly flavanols, while coffee is the most important contributor of phenolic acids, mostly hydroxycinnamic acids. Our study also demonstrated that flavonoid intakes estimated according to various databases may substantially differ. Further work should be undertaken to expand polyphenol databases to better reflect their food contents.

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In the Polish population, negative consequences of alcohol intake were seen among men who consumed more than 15 g of ethanol daily. A potential positive effect of alcohol consumption, as manifested by higher HDL-C level a lower likelihood of diabetes (only with moderate alcohol intake), was counterbalanced by a negative effect on BP, homocysteinaemia, and triglycerides.

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Specific classes and subclasses of polyphenols have been studied for their potential effects on noncommunicable diseases, but studies on association between dietary polyphenol intake (DPI) and dietary total antioxidant capacity (DTAC) and MetS (metabolic syndrome) are scarce. Therefore, the aim of this study was to determine associations between DTAC and DPI and the prevalence of MetS and its components in the Polish adult population. Subjects (5690) were participants of the Polish National Multicentre Health Examination Survey (WOBASZ II study) performed in 2013-2014. MetS was defined according to the International Diabetes Federation (IDF) and the American Heart Association/National Heart, Lung, and Blood Institute (AHA/NHLBI) criteria. Daily food consumption was assessed by 24-hour dietary recall. DTAC and DPI were evaluated using the data of food consumption and antioxidant potential of foods, measured by FRAP (ferric reducing antioxidant potential) method, and total polyphenol content in foods, measured by Folin-Ciocalteu assay. Logistic regression models were used to assess the relationship between DTAC and DPI and MetS and its components. Crude, age-adjusted, and multivariable-adjusted models were performed. This study demonstrated that in Polish women, high DPI and high DTAC were significantly associated with a reduced odds ratio for the prevalence of MetS components, such as elevated blood pressure and diabetes. In contrast, in men, high DPI and high DTAC did not have the potential to alleviate MetS components.