scholarly journals Sodium and Potassium Content of Foods Consumed in an Italian Population and the Impact of Adherence to a Mediterranean Diet on Their Intake

Nutrients ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 2681
Author(s):  
Marcella Malavolti ◽  
Androniki Naska ◽  
Susan J. Fairweather-Tait ◽  
Carlotta Malagoli ◽  
Luciano Vescovi ◽  
...  

High sodium and low potassium intakes are associated with increased levels of blood pressure and risk of cardiovascular diseases. Assessment of habitual dietary habits are helpful to evaluate their intake and adherence to healthy dietary recommendations. In this study, we determined sodium and potassium food-specific content and intake in a Northern Italy community, focusing on the role and contribution of adherence to Mediterranean diet patterns. We collected a total of 908 food samples and measured sodium and potassium content using inductively coupled plasma mass spectrometry. Using a validated semi-quantitative food frequency questionnaire, we assessed habitual dietary intake of 719 adult individuals of the Emilia-Romagna region. We then estimated sodium and potassium daily intake for each food based on their relative contribution to the overall diet, and their link to Mediterranean diet patterns. The estimated mean sodium intake was 2.15 g/day, while potassium mean intake was 3.37 g/day. The foods contributing most to sodium intake were cereals (33.2%), meat products (24.5%, especially processed meat), and dairy products (13.6%), and for potassium they were meat (17.1%, especially red and white meat), fresh fruits (15.7%), and vegetables (15.1%). Adherence to a Mediterranean diet had little influence on sodium intake, whereas potassium intake was greatly increased in subjects with higher scores, resulting in a lower sodium/potassium ratio. Although we may have underestimated dietary sodium intake by not including discretionary salt use and there may be some degree of exposure misclassification as a result of changes in food sodium content and dietary habits over time, our study provides an overview of the contribution of a wide range of foods to the sodium and potassium intake in a Northern Italy community and of the impact of a Mediterranean diet on intake. The mean sodium intake was above the dietary recommendations for adults of 1.5–2 g/day, whilst potassium intake was only slightly lower than the recommended 3.5 g/day. Our findings suggest that higher adherence to Mediterranean diet patterns has limited effect on restricting sodium intake, but may facilitate a higher potassium intake, thereby aiding the achievement of healthy dietary recommendations.

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xiaofu Du ◽  
Le Fang ◽  
Jianwei Xu ◽  
Xiangyu Chen ◽  
Yamin Bai ◽  
...  

AbstractThe direction and magnitude of the association between sodium and potassium excretion and blood pressure (BP) may differ depending on the characteristics of the study participant or the intake assessment method. Our objective was to assess the relationship between BP, hypertension and 24-h urinary sodium and potassium excretion among Chinese adults. A total of 1424 provincially representative Chinese residents aged 18 to 69 years participated in a cross-sectional survey in 2017 that included demographic data, physical measurements and 24-h urine collection. In this study, the average 24-h urinary sodium and potassium excretion and sodium-to-potassium ratio were 3811.4 mg/day, 1449.3 mg/day, and 4.9, respectively. After multivariable adjustment, each 1000 mg difference in 24-h urinary sodium excretion was significantly associated with systolic BP (0.64 mm Hg; 95% confidence interval [CI] 0.05–1.24) and diastolic BP (0.45 mm Hg; 95% CI 0.08–0.81), and each 1000 mg difference in 24-h urinary potassium excretion was inversely associated with systolic BP (− 3.07 mm Hg; 95% CI − 4.57 to − 1.57) and diastolic BP (− 0.94 mm Hg; 95% CI − 1.87 to − 0.02). The sodium-to-potassium ratio was significantly associated with systolic BP (0.78 mm Hg; 95% CI 0.42–1.13) and diastolic BP (0.31 mm Hg; 95% CI 0.10–0.53) per 1-unit increase. These associations were mainly driven by the hypertensive group. Those with a sodium intake above about 4900 mg/24 h or with a potassium intake below about 1000 mg/24 h had a higher risk of hypertension. At higher but not lower levels of 24-h urinary sodium excretion, potassium can better blunt the sodium-BP relationship. The adjusted odds ratios (ORs) of hypertension in the highest quartile compared with the lowest quartile of excretion were 0.54 (95% CI 0.35–0.84) for potassium and 1.71 (95% CI 1.16–2.51) for the sodium-to-potassium ratio, while the corresponding OR for sodium was not significant (OR, 1.28; 95% CI 0.83–1.98). Our results showed that the sodium intake was significantly associated with BP among hypertensive patients and the inverse association between potassium intake and BP was stronger and involved a larger fraction of the population, especially those with a potassium intake below 1000 mg/24 h should probably increase their potassium intake.


Nutrients ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 528
Author(s):  
Roswitha Siener ◽  
Norman Bitterlich ◽  
Hubert Birwé ◽  
Albrecht Hesse

Despite the importance of dietary management of cystinuria, data on the contribution of diet to urinary risk factors for cystine stone formation are limited. Studies on the physiological effects of diet on urinary cystine and cysteine excretion are lacking. Accordingly, 10 healthy men received three standardized diets for a period of five days each and collected daily 24 h urine. The Western-type diet (WD; 95 g/day protein) corresponded to usual dietary habits, whereas the mixed diet (MD; 65 g/day protein) and lacto-ovo-vegetarian diet (VD; 65 g/day protein) were calculated according to dietary reference intakes. With intake of the VD, urinary cystine and cysteine excretion decreased by 22 and 15%, respectively, compared to the WD, although the differences were not statistically significant. Urine pH was significantly highest on the VD. Regression analysis showed that urinary phosphate was significantly associated with cystine excretion, while urinary sulfate was a predictor of cysteine excretion. Neither urinary cystine nor cysteine excretion was affected by dietary sodium intake. A lacto-ovo-vegetarian diet is particularly suitable for the dietary treatment of cystinuria, since the additional alkali load may reduce the amount of required alkalizing agents.


Nutrients ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 2345
Author(s):  
Masayuki Okuda ◽  
Satoshi Sasaki

The identification of sodium and potassium intake in youths is an important step to preventing the increase of blood pressure in childhood. We examined food intake and estimated mineral intake using a brief-type self-administered diet history questionnaire (BDHQ) to test its validity as a comparison with urinary excretion in Japanese youths. The subjects were 5th and 8th graders (n = 2377), who completed the BDHQ and permitted the use of their overnight urine specimens. Sodium intake was poorly associated with sodium excretion (Rho = 0.048), and the coefficients of dietary potassium and a sodium-to-potassium molar ratio were 0.091–0.130. Higher soybean paste (miso) intake and pickles were significantly associated with higher sodium excretion (p ≤ 0.005). However, these foods were positively associated with potassium excretion (p = 0.002–0.012), and not associated with an excreted sodium-to-potassium ratio. Fruits and dairy products were positively associated (p ≤ 0.048), whereas beverages were negatively associated with potassium excretion (p ≤ 0.004). The association of the sodium-to-potassium ratio was opposite to that of potassium (p ≤ 0.001). The choice of foods, potassium, and the sodium-to-potassium ratio assessed using the BDHQ are available as part of health education for youths, but the assessment of sodium intake in population levels should be carefully conducted.


Nutrients ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 1197
Author(s):  
Luana Izzo ◽  
Antonio Santonastaso ◽  
Gaetano Cotticelli ◽  
Alessandro Federico ◽  
Severina Pacifico ◽  
...  

The World Health Organization has declared the coronavirus outbreak a Public Health Emergency of International Concern; the outbreak has led to lockdowns in several parts of the world, and sudden changes in people’s lifestyles. This study explores the impact of the first coronavirus disease 2019 (COVID-19) pandemic period on dietary habits, lifestyle changes, and adherence to the Mediterranean diet among the Italian population, through an online questionnaire, conducted from April to May 2020, involving 1519 participants. The 14-point Mediterranean Diet Adherence Screener (MEDAS) highlighted a medium Mediterranean diet adherence in 73.5% of responders, which principally included the younger population, aged 18–30 years (p < 0.05). In regards to changes in eating habits, 33.5% of responders declared an influence of the pandemic period on nutritional practice. A decrease in alcohol consumption was reported by 81% of responders, while an increase in frozen food consumption was reported by 81.3% of responders. In addition, 58.8% reported positive weight modification (40.8%, +1–3 kg); physical activity reduction was reported for 70.5% of responders. Our study contributes toward amplifying the investigation on the dietary habits and changes of the Italian population during the COVID-19 lockdown, although the pandemic is ongoing. Similar studies should be performed around the world to understand how the emergency has impacted people’s habits.


2022 ◽  
pp. 109980042110654
Author(s):  
María Correa-Rodríguez ◽  
Sara DelOlmo-Romero ◽  
Gabriela Pocovi-Gerardino ◽  
José-Luis Callejas-Rubio ◽  
Raquel Ríos-Fernández ◽  
...  

Purpose: The aim of this study was to investigate the association between dietary sodium, potassium, and sodium:potassium ratio and clinical disease activity parameters, damage accrual, and cardiovascular disease risk factors in a population of patients with systemic lupus erythematous (SLE). Research design and study sample: A cross-sectional study including a total of 280 patients was conducted (90.4% females; mean age 46.9 ± 12.85 years). Data collection: The SLE Disease Activity Index (SLEDAI-2K) and the SDI Damage Index were used to assess disease activity and disease-related damage, respectively. A 24-hour diet recall was used to estimate dietary intake of sodium and potassium. Results: Dietary sodium intake was significantly associated with anti-dsDNA ( β  =  −.005; 95% CI [.002 .008]; p = .001) and complement C4 level ( β  =  −.002; 95% CI [−.003, .000]; p = .039). Dietary potassium intake was also significantly associated with complement C3 level ( β  =  −.004; 95% CI [−.007, −.001]; p = .021). Multiple logistic regression models revealed a positive association between dietary sodium intake and the risk of having hsCRP > 3 ( p = .005) and an inverse association between dietary potassium intake and the risk of having hsCRP > 3 ( p = .004). Conclusions: SLE patients with higher dietary sodium and lower dietary potassium intakes had an increased risk of higher hsCRP. Dietary sodium intake was significantly associated with anti-dsDNA and complement C4 level, while dietary potassium intake was associated with complement C3 level, supporting that dietary sodium and potassium intakes might play a key role in markers related to disease activity in SLE patients.


2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
A C Vendeville ◽  
H A H Kaasjager ◽  
R E A Musson ◽  
W Spiering

Abstract Background Dietary sodium restriction and upholding adequate potassium intake is an important lifestyle modification strategy advocated in guidelines for the management of hypertension and for lowering cardiovascular risk in the general population. The gold standard for estimating sodium and potassium intake, 24-hour urine collection (24hUc), is time consuming and cumbersome, but most importantly not a good indicator of dietary habit due to day-to-day variation. New lab-on-a-chip technology has been developed to measure urinary sodium, potassium and creatinine excretion in a single drop of urine using microcapillary electrophoreses combined with conductivity analyses. Self-monitoring can be done at home over a longer period of time. Results are readily available. Purpose To assess agreement between 24hUc and the lab-on-a-chip self-monitoring device for estimating past 24h dietary sodium and potassium intake for single and multiple self-tests by using the Kawasaki, INTERSALT and Tanaka formulae. Methods Healthy participants (n=12) were asked to adhere to three different weekly dietary sodium restriction goals. Participants received verbal and written information to aim between 3.3 and 5.0 grams of sodium intake a day during week 1 (“normal”), >3.3<5.0 grams in week 2 (low) and >5.0 grams during week 3 (high). Weekly measurement instructions consisted of one self-test on day 1 through 6 and multiple self-tests (n=3) combined with a 24hUc on day 7. To estimate 24h sodium and potassium intake, Kawasaki, INTERSALT and Tanaka formulas were used. The Bland-Altman method was used to calculate the agreement. Results The agreement (mg/day) for sodium between 24hUc and a self-test on first morning urine (fmu) (Kawasaki), was −102±804 (normal), −860±592 (low) and 340±1406 (high). For multiple self-tests (n=3) performed on 24hUc days, using the INTERSALT formula, the agreement was: 577±832 (normal), −701±721 (low) and 1788±911 (high). Any combination of same day single or multiple INTERSALT or Tanaka self-tests and fmu Kawasaki did not result in better agreement. For potassium the agreement between 24hUc and fmu (Kawaksaki) was 1071±966 (normal), 1376±678 (low) and 1654±880 (high). Using the Tanaka formula resulted in further underestimation and thus worse agreement for same day self-tests and fmu. Conclusion In this study, agreement between 24hUc and the lab-on-a-chip self-monitoring device for estimating past 24h dietary sodium intake was best for a fmu self-test calculated with the Kawasaki formula. For estimating potassium intake, a fmu self-test with help of the Kawasaki formula overestimated potassium intake considerably. This lab-on-a-chip self-monitoring device has the potential to improve current lifestyle modification strategies.


Medicina ◽  
2018 ◽  
Vol 54 (1) ◽  
pp. 10
Author(s):  
Ilva Lazda ◽  
Māris Goldmanis ◽  
Inese Siksna

Background and objective: High dietary sodium intake is associated with multiple health risks, and the average sodium intake in Latvia is higher than the World Health Organization has recommended. In Latvia, no study so far has combined self-reported dietary data on sodium and potassium intake with objective measurements in 24-h urine samples. This pilot study aimed to cross-validate both methods and to assess any possible factors interfering with the collection of samples and data in large, population-based future studies of sodium and potassium intake in Latvian adults. Materials and methods: A stratified random sample of healthy Latvian adults aged 19–64 (n = 30) was drawn. Dietary data of sodium and potassium was collected using one 24-h dietary recall and a two-day food diary. Sodium and potassium excretion was measured by one 24-h urinary collection. Results: Median intake of sodium and potassium based on dietary data was 2276.4 mg/day (interquartile range (IQR), 1683.3–3979.4) and 2172.0 mg/day (IQR, 1740.6–3506.5), respectively. Median intake of sodium and potassium based on urinary data was 3500.3 mg/day (IQR, 2191.0–5535.0) and 2965.4 mg/day (IQR, 2530.2–3749.9), respectively. Urinary data showed significantly higher results than dietary records (Wilcoxon signed rank test, p = 0.023). Only 13% of the subjects did not exceed the WHO-recommended limit of 2000 mg of sodium per day, and only 33% consumed at least the recommended allowance of 3510 mg of potassium per day. Median intake of salt was 8.8 g/day (IQR, 5.5–13.8) (according to urinary data). Conclusions: The findings from the present study showed considerable underestimation of dietary sodium and potassium intake based on self-reported dietary data. Urinary data revealed more accurate results, and showed that Latvian adults exceed the amount of salt recommended and consume less potassium than recommended. The pilot study also showed that the chosen methods are adequate for implementation in large, population-based studies to evaluate dietary intake of salt, sodium, and potassium in populations of Latvian adults.


2017 ◽  
Vol 158 (17) ◽  
pp. 653-661 ◽  
Author(s):  
Barbara Nagy ◽  
Zsuzsanna Nagy-Lőrincz ◽  
Márta Bakacs ◽  
Éva Illés ◽  
Eszter Sarkadi Nagy ◽  
...  

Abstract: Introduction and aim: The Hungarian Diet and Nutritional Status Survey examined the dietary habits of the Hungarian adult population. The aim of the study is to present the macroelement intake of the population. Method: The study represents the macrolement intake of the population with age 18 or over on the day of 31 December 2013, of those who are non-institutionalised. Results: Salt intake decreased compared to the findings of the previous study in 2009 but it is still extremely high (15.9 g in men and 11.2 g in women). The potassium intake is below the recommendation, which together with a high sodium intake increases the risk of high blood pressure. Calcium intake in the youngest age group reached the recommendations, whereas the intake in the oldest age group was well below the references. Magnesium intake complied with the recommendation, the intake of phosphorus however exceeded it. High sodium intake still represents substantial public health risk. Conclusion: The reduction that occured in the population’s salt intake since 2009 demonstrates the effectiveness of implemented prevention programs, cooperation with the industry and public awareness campaigns. Orv Hetil. 2017; 158(17): 653–661.


Hypertension ◽  
2020 ◽  
Vol 76 (5) ◽  
pp. 1580-1588
Author(s):  
Yuan Li ◽  
Puhong Zhang ◽  
Jing Wu ◽  
Jixiang Ma ◽  
Jianwei Xu ◽  
...  

This study aimed to assess current level of sodium and potassium intake and their associations with blood pressure (BP) using the 24-hour urinary data in a large sample of China. Data from participants aged 18 to 75 years were collected as the baseline survey of Action on Salt China in 2018. Of 5454 adults, 5353 completed 24-hour urine collection. The average sodium, potassium excretion, and sodium-to-potassium molar ratio were 4318.1±1814.1 mg/d (equivalent to 11.0±4.6 g/d of salt), 1573.7±627.1 mg/d, and 5.0±2.1, respectively. After adjusting for potential confounding factors and correcting for regression dilution, each 1000-mg increase in sodium excretion was associated with increased systolic BP (1.32 mm Hg [95% CI, 0.92–1.81]) and diastolic BP (0.34 mm Hg [95% CI, 0.09–0.60]). Each 1000-mg increase in potassium excretion was inversely associated with systolic BP (−3.19 mm Hg [95% CI, −4.38 to −2.20]) and diastolic BP (−1.56 mm Hg [95% CI, −2.29 to −0.90]). Each unit increase in sodium-to-potassium molar ratio was associated with an increase of systolic BP by 1.21 mm Hg (95% CI, 0.91–1.60) and diastolic BP by 0.44 mm Hg (95% CI, 0.24–0.64). The relationships between sodium and BP mostly increase with the rise of BP quantiles. Potassium shows the opposite trend. The current sodium intake in Chinese adults remains high and potassium intake is low. Sodium and sodium-to-potassium ratio were positively associated with BP, whereas potassium was inversely associated with BP. Registration— URL: https://tinyurl.com/vdr8rpr ; Unique identifier: ChiCTR1800017553. URL: https://tinyurl.com/w8c7x3w ; Unique identifier: ChiCTR1800016804. URL: https://tinyurl.com/s3ajldw ; Unique identifier: ChiCTR1800018119.


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