Dietary Supplement Users Research Articles

Comparison of Dietary Supplements Consumption Between Female University and National Team Sports Athletes in Malaysia.

Dietary supplement consumption had already become well known among athletes especially those who were involved in team sports to enhance performances, health benefits, and nutritional strategies. This study aimed to determine the difference in dietary supplement consumption between the female university and national team sports athletes in Malaysia. The Dietary Supplement Questionnaire was used to compare the participants’ dietary supplements usage and it was distributed online via a Google Form. Results from this study showed there was no significant difference in the usage of individual vitamins/minerals. However, based on frequency, the usage of vitamin C was the most popular among these groups. Next, there was a significant difference in the usage of protein powder (t = -2.435, df = 61, p <0.018) and, creatine (t = -2.192, df = 61, p <0.032) between the female university and national athletes. After that, there was a significant difference in usage of other supplements and sports aid which was fish oil/omega 3 (t = -1.466, df = 61, p < 0.032). The national athletes showed higher consumption of dietary supplements compared to the university athletes due to their higher level of competition, energy requirement, and long-time of training.

The Use of Dietary Supplements and Their Association with COVID-19-Related Anxiety among Non-Institutionalized Elderly in Northern Greece

The elderly constitute a vulnerable group for increased anxiety and poor diet during the COVID-19 pandemic. There is limited research on the levels of COVID-19-related anxiety and dietary habits including dietary supplementation practices among the elderly and very elderly in Greece. A cross-sectional survey was conducted in 364 non-institutionalized elderly (65–74 y) and very elderly (≥75 y) living in northern Greece, with the aim to investigate the use of dietary supplements and their association with other factors, particularly the COVID-19-related anxiety. Levels of anxiety were assessed with the use of the Coronavirus Anxiety Scale (CAS-5). The percentage of dietary supplement users was 62.6%. The most popular dietary supplements used were vitamin D followed by vitamin C and multivitamin and mineral supplements. Multivariate analysis showed that the very elderly and overweight individuals were less likely to consume vitamin D supplements. Approximately a third of the participants (33.8%) exhibited signs of COVID-19-related anxiety but only 8% showed dysfunctional levels of anxiety. Regression analysis indicated that women, former smokers, and people exhibiting any sign of COVID-19 anxiety were approximately two times more likely to consume dietary supplements of any kind (Gender: OR 2.34, 95% CI 1.30–4.19; Smoking: OR 2.15, 95% CI: 1.08–4.26; COVID-19 anxiety: OR 2.16, 95 % CI: 1.20–3.91). Our results provide useful insights into the current practices of dietary supplement use in this population group and could be used by dietetic and medical associations as well as public authorities in the formulation of targeted, safe, and effective interventions for the protection of public health.

Prevalence, Determinants, and Consumer Stance towards Dietary Supplements According to Sex in a Large Greek Sample: A Cross-Sectional Study.

A stratified random sampling technique was used in order to explore the prevalence of and the factors influencing dietary supplement (DS) use and the consumer stance towards DS by Greeks (n = 28,491, ≥15 years) according to sex. Additionally, we performed a Pearson’s chi-square to test within DS users for the dependence between sex and the examined factors, and binary logistic regression to create predictive DS user profiles. A history of DS use accounted for 55.5% and was more prevalent in women (58.4% vs. 52.3%, p < 0.001); multivitamins were the most popular DS used. The significant predictors for DS use for both sexes were age, education, employment status, exercise, and following a special diet, while BMI and monthly income were significant for women and men, respectively. The women and men DS users had mostly illness-health and fitness-related goals, respectively. Substantial proportions of the respondents had false beliefs about DS. A noticeable percentage of DS users displayed imprudent behavior regarding DS use, e.g., one out of five did not know the definition or did not take into consideration the recommended daily allowance. While several factors seemed to impact DS use, with certain differences between the sexes, the considerable lack of knowledgeable and responsible use of DS, with few differences between the sexes, observed can point state authorities and health professionals towards appropriate countermeasures.

Dietary Supplements usage in Adults and Elderly

Dietary Supplements usage in Adults and Elderly

Prevalence and factors associated with dietary supplement use among Bangladeshi public university students: A cross-sectional study.

IntroductionThe usage of dietary supplement (DS) such as vitamins, minerals, and fish oil has expanded, but there is limited data on their use by sub-populations such as university students. The study was aimed to investigate the prevalence of DS use among Bangladeshi university students and its associated factors.MethodsA cross-sectional survey of 390 students was conducted from two public universities from Barishal Division in Bangladesh using a structured questionnaire with 72 questions divided into five sections: sociodemographic, knowledge, opinions, and attitudes, types of DS, reasons and sources for using DS, and adverse reactions after taking DS. Descriptive statistics and logistic regression were utilized to estimate the results.ResultsAmong all the students, 15.6% students were using DS where only 7.7% of them used DS according to physicians’ recommendation. Additionally, students used DS for general health and well-being, weight gaining and as a source of energy for physical and sporting activities, etc. The use of DS was significantly associated with female sex (AOR = 5.44, 95% CI: 2.18–13.52), ≥25 years age (AOR = 0.08, 95% CI: 0.01–0.67), underweight (AOR = 5.86, 95% CI: 1.95–17.62), having major illness (AOR = 6.99, 95% CI: 1.98–24.70) and good knowledge of DS (AOR = 2.64, 95% CI: 1.23–5.64).ConclusionThis study provides new findings on DS use and its correlates in Bangladeshi students which may be used by the policymakers to improve DS usage among students. Adaptation of an appropriate program is recommended to educate students on proper and safer ways of using DS.

Differences in the Perception of Dietary Supplements between Dietary Supplement/Medicine Users and Non-Users.

Some patients use dietary supplements and medicines concomitantly, with an inappropriate perception of their safety and efficacy. To clarify the perception between dietary supplement and medicine users and non-users, we conducted an internet survey. In this survey, 38.9% of participants used dietary supplements, 32.6% used prescription medicines, and 14.7% used dietary supplements and prescription medicines concomitantly. Then, we conducted a further survey on four groups, dietary supplement and prescription medicine users, dietary supplement only users, prescription medicine only users, and non-users (500 each). Dietary supplement users had favorable outcomes in terms of both the safety and efficacy of dietary supplements compared to dietary supplement non-users. This perception of dietary supplements was independent from medicine use. The awareness of the Health Food Network consumer navigation site, which provides information about dietary supplements for consumers, was the highest among dietary supplement and prescription medicine users, but it was still low (2.2%). In conclusion, consumers who use dietary supplement and prescription medicine concomitantly have favorable outcomes for their safety and efficacy and a low awareness of their interaction. There is a need to provide information, especially regarding the risk of interaction, that takes into account the consumer’s situation.

Prevalence of Dietary Supplement Use among Athletes Worldwide: A Scoping Review.

Athletes represent a major part of dietary supplement users. This scoping review aims to explore the prevalence of dietary supplement use among athletes worldwide, most commonly used supplements, sources of information on dietary supplements and their reasons for use of these supplements. PubMed, CINAHL, MEDLINE, and PsycInfo were searched for original research articles. Studies were included if they involved athletes, identified the prevalence of dietary supplement use, and were published after 2017. A total of 26 articles were reviewed. Prevalence of dietary supplement use varied among articles, but sex-based differences related to the types of used dietary supplements existed. Generally, the findings were consistent in terms of reasons for use and sources of information. Unfortunately, the lack of homogeneity regarding the definition of dietary supplements, definition of use, reporting timeframes, and data collection methods complicates the attempt to compare the findings among studies.

Prevalence of Essential Nutrient Supplement Use and Assessment of the Knowledge and Attitudes of Lebanese Mothers towards Dietary Supplement Practices in Maternal, Infancy and Preschool Ages: Findings of a National Representative Cross-Sectional Study.

Mothers are understandably concerned about protecting the well-being of their offspring in every way possible, including providing oral dietary supplements (DSs). Up to now, there has been limited data on maternal knowledge and attitudes toward concomitant maternal–child DSs practices in Lebanon. This study evaluated the maternal knowledge and attitudes toward DSs and documented the DS-related practices in mothers and their under-5 children with their correlates. This cross-sectional study involved a representative stratified cluster random sample of 511 mother–child dyads (mothers: mean age ± SD = 30.25 ± 4.98 years; children: mean age ± SD = 18.7 ± 15.5 months, girls: 55.0%). A self-administered questionnaire was used to meet study aims. Most mothers lack awareness and hold unfavorable attitudes regarding DS use. Among all mothers, 47% were DS users, with the majority using vitamin D (82%). Almost 64% of mothers provide DSs for their children, with a predominant use of multivitamin drops (61.0%). “To keep the child healthy” was the reported reason by 60.0% of mothers to provide DSs for their children. Physicians were the primary information source about DSs for most mothers (64.0%). The usage of DSs among mothers was influenced by their pregnancy status, child’s age, number of children per household, and their awareness and attitudes towards DSs. DS usage among children was correlated with maternal DS use and their mothers’ attitudes towards DSs. DS usage among Lebanese mother–child dyads is common. Mothers should be the focus of education sessions regarding DS use.

Analysis of COVID-19 Pandemic on Supplement Usage and Its Combination with Self-Medication within the State of Arkansas

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a novel coronavirus responsible for the COVID-19 pandemic that can lead to severe respiratory distress requiring hospitalization and can be fatal. Media have reported that various dietary supplements (DS) or their combination with different medications can prevent infection or decrease disease severity. Here, we analyzed data collected from 15,830 patient follow-up telephone interviews from the University of Arkansas for Medical Sciences COVID-19 testing sites from March 15 to August 1, 2020. Within the REDCap database, we recorded patient demographics and DS and medication use. In total, data on DS and medication use was available for 8,150 study participants, of whom 21.9% and 4.1% reported using DS or medications, respectively, to either prevent or treat COVID-19. The majority of respondents were female (64%) and non-Hispanic whites (44.5%). Most individuals (64.5%) who took DS were younger than 50 years of age. Products such as vitamin C (1,013, 33.2%), multivitamins (722, 23.6%), and vitamin D (294, 9.6%) were the most commonly used DS among the responders. Analysis of the DS use and symptom scores association did not provide a strong evidence of beneficial health effects of DS. The results of this study demonstrate that a significantly higher proportion of study participants considered usage of DS to mitigate or prevent COVID-19-related symptoms compared to those who preferred medications. However, lack of observable health benefits associated with ingestion of DS suggests that more rigorous research is needed to substantiate the label claims.

Prevalence of Dietary Supplements Use among College Students in Iraq

Background: Dietary supplements (DS) are products that are intended to be consumed orally and serve the purpose of supplementing one's diet. Although, these products are very popular, their usage among undergraduate students in Iraq is still obscure. Aim: To evaluate the pattern, type, and reasons for supplement usage among Iraqi undergraduate students and to detect the source of information about dietary supplements. Methods: A sample of 442 students at different colleges in Baghdad were surveyed through a questionnaire composed of 13 questions and divided into four sections: socio-demographic, dietary supplement (DS) knowledge, DS intake, and reasons behind their usage. Descriptive statistics were conducted to determine the frequency and percentages of respondents for each variable. Results: A total of 442 participants were included in the study; 160 (36.2%) were males and 282 (63.8%) were females. Out of the total number of the participants, 329 (74%) were dietary supplement users, 139 (42.25%) were males, and 190 (57.75%) were females. Most of the participants (72%) used vit. D3 supplement, and the mean reason for using DS was to overcome nutritional deficiency. Conclusion: Most of the participants are dietary supplement users, with a higher percentage of females. The main reasons for both genders' resorting to dietary supplement use are to improve their health and improve their immunity.

Dietary supplement use and associated variables among Turkish women

Introduction: Dietary supplement use is continuously increasing in the world and it seems to be more common among women. Data on supplement habits of women in Turkey are still limited. The purpose of this study is to determine dietary supplement use and to evaluate associated factors in Turkish women in the pre-COVID-19 period. Methods: A total of 727 Turkish women (33.4[10.3] years; 25.9[4.57] kg/m2; 162.9[6.81] cm) participated in this cross-sectional study. After piloting, the participants completed a six-part questionnaire form that was administered either face-to-face or over the phone by a trained dietitian. The questionnaire intended to collect data about demographic characteristics, use of dietary supplements and factors influencing supplement choices such as eating habits, physical activity and lifestyle habits. Results: A total of 307 participants (42.2%) used at least one dietary supplement within the previous year. The most commonly used was iron (30.6%) followed by vitamin D (30.6%), vitamin B12 (26.7%), multivitamins (18.2%), and calcium (11.4%). Supplement use decreased with higher physical activity (p=0.002). Furthermore, it was significantly higher among women who consume meals at regular times (p=0.001) and those that avoid fast food consumption (p=0.014). However, the use of dietary supplements was not associated with lower BMI, older age or higher academic level (p&gt;0.05). Conclusions: More than 40% of women were reported using dietary supplements. The use of supplements was not associated with lower BMI, higher physical activity, older age, higher academic level smoking or drinking. Turkish women seem to show a different consumer profile from typical dietary supplement users.

Perceptions and Patterns of Dietary Supplements’ Use during COVID-19 among Undergraduate Female Students in Saudi Arabia

(1) Background: During the COVID-19 pandemic, the use of Dietary Supplements (DSs) has increased for health promotion purposes. Few data records were found on the safe use of DSs among university students in Saudi Arabia, during COVID-19. This study aimed to assess the perceptions and patterns of DSs during COVID-19 among students at a selected female university. (2) Methods: A descriptive cross-section design was used. A convenient sample of undergraduate students (n = 651) were recruited via email, to fill in an online validated questionnaire: The nutrition and intake of DSs during COVID-19. Data were analyzed using descriptive and inferential statistics. (3) Results: Among the 509 students who did not have chronic diseases, 85% of them had taken DSs. About 35.5% of the students had not changed their dietary habits since the beginning of COVID-19, but 78.6% thought that they needed to improve their immunity by taking DSs. Half of the students 51.2% believed that healthy habits may reduce the chance of being infected with COVID-19. The most used DSs were vitamin C (84.3%), followed by honey (65.3%), and vitamin D (47.7%). At the top of students’ references for DSs was personal judgment or previous knowledge of the benefits (27.3%). (4) Conclusion: The usage and patterns of DSs were impacted by the COVID-19 pandemic. Taking DSs without a doctor’s prescription may lead to several complications. DSs users should be educated effectively about the proper use of DSs as an external supplementation.

Prevalence, Information &amp; Attitude towards Using Supplements among University Athletes

The purpose of this study was to analyze the prevalence of dietary supplements usage amongst university’s players, in addition to their know-how and players towards sports supplementation. Current study check out the extent of knowledge, attitudes, beliefs and practices regarding using dietary supplements of 100 athletes was administered, which included 88 Males and 12 Females, 20 to 27 years of age from the population of university athletes. The comparison was analyzed by chi-square test to observe the importance of distinction amongst respondents’ notion about the statements of questionnaires. The results calculated through Statistical Package for Social Sciences (SPSS-25). The outcomes displayed that maximum of the athletes proven the satisfactory knowledge of dietary supplements and the motives for the usage of them; however the outcome of the study suggested that need of inclusive knowledge of players about supplements and under vigilant management showed improvement of University athletes.

The Prevalence of Dietary Supplement Use for the Purpose of COVID-19 Prevention in Japan.

COVID-19 is still the biggest issue worldwide. Many dietary supplements on the market claim to have anti-COVID-19 effects without scientific evidence. To elucidate the prevalence of dietary supplement usage for the prevention of COVID-19, we conducted an online cross-sectional questionnaire survey among Japanese adults in January 2022. The prevalence of dietary supplement use for the prevention of COVID-19 was 8.3%, and there was no gender difference. We also conducted additional research on these dietary supplement users (1000 males and 1000 females). The most popular ingredient used was vitamin C (61.0%), with vitamin D (34.9%) and probiotics (33.4%) following. Half of these participants reported using supplements for more than one year. The information sources that reportedly led them to start using dietary supplements for the prevention of COVID-19 were the Internet (44.0%), television and radio (29.9%), and family or friends (26.0%), and these information sources differed among generations. In conclusion, some of the population used vitamin/mineral supplements for the prevention of COVID-19 that might be beneficial for their health, but some used ingredients with no scientifically proven effects against the virus at this time. Therefore, information-based scientific evidence is important to prevent the inappropriate use of dietary supplements by consumers.

Who is taking dietary supplements in Peru? Results of a non-probability crosssectional survey

Objective: To identify the profile and perception of dietary supplement users in the population of Lima, Arequipa and Trujillo, Peru. Materials and methods: An analytical cross-sectional study conducted with subjects over 18 years of age residing in the cities of Lima, Arequipa and Trujillo, Peru. The study was performed in two steps. In the first step, personal interviews were held using structured and standardized surveys. In the second step, a structured survey was designed with open and closed questions related to the purchasing and consumption habits of dietary supplements. Results: Eight hundred ninety (890) people were interviewed, out of which 42 % reported to be dietary supplement users, being vitamins and minerals the most commonly used products. It was observed that these users had been taking daily doses of dietary supplements for 3 to 12 months. Additionally, it was found that family and friends served as a source of information on dietary supplements similar to the one provided by doctors and nutritionists. Conclusions: The results of this study conducted with a representative sample from Lima, Arequipa and Trujillo showed that a high percentage of the population was satisfied with using dietary supplements regularly. It is important to point out that there were no significant differences between the percentage of the surveyed population that used dietary supplements recommended by nutritionists and the one which used them on family and friends’ recommendation. This suggests that it is necessary to improve nutritional habits with educational strategies on eating habits and adapt the use of dietary supplements to a balanced diet. These results could allow the population to use dietary supplements more effectively as a tool to reduce nutritional deficiencies.

Dietary Supplement Use in Relation to Socio-Demographic and Lifestyle Factors, including Adherence to Mediterranean-Style Diet in University Students.

The study aimed to examine socio-demographic and lifestyle determinants, including diet quality, of dietary supplement (DS) use among 2545 students who attended public universities in Warsaw. The data was collected using a self-administered health and lifestyle questionnaire and a 5-day dietary record method. Diet quality was assessed using a Mediterranean Diet Score. To determine the covariates of DS use, multivariate-adjusted logistic regression models with an estimation of odds ratios (ORs) and 95% confidence intervals (95% CIs) were used. The results showed that 41% of participants were DS users. The following predictors of DS use were identified: gender (male vs. female; OR:0.62, 95% CI:0.50–0.79), physical activity (high vs. low; OR:1.79, 95% CI:1.45–2.20), BMI (≥25 vs. 18.5–24.9 kg/m2; OR:0.77, 95% CI:0.61–0.98), cigarette smoking (yes vs. no; OR:0.67, 95% CI:0.52–0.86), and presence of chronic diseases (yes vs. no; OR:2.37, 95% CI:1.89–2.98). Moreover, higher nutritional knowledge, special diet usage, eating more meals/day, and fortified food consumption were determinants of DS use. Adherence to the Mediterranean-style diet was positively associated with DS use, a 1-score increment was associated with a 10% (p-trend = 0.011) higher probability of DS usage. Given that the use of vitamins and/or minerals is common among university students and their users are characterized by eating a higher quality diet, investigating the contribution of DS in overall dietary nutrient intake warrants further study.

Evaluating perceptions and usage of natural remedies, herbal medicine, and dietary supplements for kidney stones among a diverse, international, urban patient population.

Our goal was to assess the use and perceptions of complementary and alternative medicine (CAM) for kidney stones among a diverse, urban population. This was a cross-sectional study of patients treated for kidney stones in the Bronx, NY. We assessed demographic information, personal history of kidney stones, as well as knowledge and use of CAM for kidney stones. Patient demographics and responses were analyzed using chi-squared, t tests, and binomial logistic regression. 113 patients were surveyed. 90% identified as non-white, of whom 58% indicated Hispanic, 46% Latinx, and 23% Black. 56% of patients were born outside the United States. 56% of patients had heard of CAM for kidney stones and 44% had used CAM for kidney stones. The most common CAM were fruits (N = 42, 84%). Recurrent stone formers were more likely than first-time stone formers to have heard of CAM (68 vs 44% p = 0.013) and to have used CAM (56 vs 30%, p = 0.008). Those identifying as Hispanic were more likely to have both heard of and tried CAM for kidney stones (p = 0.036 and 0.022, respectively) compared to non-Hispanic patients. CAM are commonly used among our diverse, urban patient population. While some remedies are high in citrate and alkali (i.e., lemon, cranberry), others are high in oxalate (i.e., beets) and could potentially contribute to stone formation. These findings underpin the importance that medical providers educate themselves on the CAM used in their specific patient populations and discussing use with patients. Providers should aim to identify and reconcile therapeutics that oppose goals of treatment.

Influence of the Emotion of Fear on Patterns of Consumer Behavior toward Dietary Supplements during the COVID-19 Pandemic

The focus of this paper is placed on the role of emotions in consumer behavior, specifically in the process of purchasing dietary supplements during the COVID-19 pandemic. The theoretical part is based on current knowledge from relevant Croatian and foreign scientific and professional literature on dietary supplements, the COVID-19 pandemic, consumer behavior, decision-making and the impact of emotions on it, while the empirical research portion of this paper details the attitudes of consumers who buy food supplements, the role and importance of different emotions that have a greater or a lesser impact on the purchase of food supplements, with special reference to the timing of the COVID-19 pandemic, and the factors that make consumers decide to purchase food supplements. This research was conducted in the form of a survey that included 257 respondents who were actual users of dietary supplements. It showed that the main drive for buying dietary supplements during the COVID-19 pandemic is the emotion of fear, as the consumers perceived this new disease as a threat to their health and life.

Lifestyle, Eating Habits, and Health Behaviors Among Dietary Supplement Users in Three European Countries.

Dietary supplements (DS) are used by about 30–50% of adults in developed countries. However, only a few studies have compared the characteristics of DS users in different nations. This study aimed to identify and compare selected health-related behaviors of DS users from three European countries. A total of 3,588 adults (32.08 ± 8.04 years) from Poland (1,030 females, 287 males), Germany (994 females, 190 males), and the United Kingdom (911 females, 176 males) were included in the analysis. The study was based on a self-administered survey consisting of 70 questions regarding baseline characteristics, lifestyle, eating, and health habits. The associations of the obtained results were compared using the Kruskal–Wallis test, Pearson Chi-Square test, and Cramer's V value. The highest percentage of DS users (56.98%, n = 2,044) had a correct body weight, while higher body weight values were observed in 39.19% (n = 1,406). In terms of lifestyle, statistically significant differences (p < 0.05) were noted for alcohol consumption and the level of physical activity. Fruit and vegetables were most often consumed a few times a weeks (34.67%, n = 1,244). A similar result was observed for the consumption of whole grain (37.76%, n = 1,355), dairy (39.99%, n = 1,435), eggs (49.67%, n = 1,782), and meat (51.45%, n = 1,846). Most DS users did not have a chronic disease (66.72%, n = 2,394). Among the other conditions, a frequent occurrence (a few times a weeks) of gastrointestinal problems (28.29%, n = 1,015) and concentration disorders (29.15%, n = 1,046) was noted. Cramer's V values (<0.3) indicated a weak (but significant p < 0.05) relationship between the country of residence and most of the analyzed variables. In conclusion, DS users were characterized by a healthy lifestyle with appropriate behaviors but not healthy eating habits.

Impact of Dietary Assessment Methods on Reports of DS Product Use and Nutrient Intakes Among DS Users

ObjectivesReliable dietary assessment tools for assessing nutrient intake from foods/beverages and dietary supplements (DS) are critical for population-level monitoring; yet, different tools vary in their strengths and weaknesses for assessing intake from foods/beverages, and less is known about the performance of these tools in measuring intake from DS. The Interactive Diet and Activity Tracking in AARP (IDATA) cohort study was designed to evaluate the measurement error structure of 24-hr dietary recall (24 HR) and food-frequency questionnaire (FFQ) data, inclusive of DS information. The objective of the study was to compare DS data reported on 24 HRs and frequency-based questionnaires from the IDATA study among U.S. adults (aged 50–74 y; n = 795).MethodsDS information was collected over 12 months among adults who participated in IDATA and completed up to 6 Automated Self-Administered 24 HRs (ASA24s; 2011 version) and 2 FFQs (i.e., Diet History Questionnaire (DHQ) II), which queried information on DS usage, frequency, and amount of DS taken. Prevalence of use by product type and estimated nutrient intakes from DS for selected nutrients (i.e., calcium, magnesium, vitamins C and D) were compared between the 2nd DHQ II and the average of ≥2 ASA24s using the kappa coefficient to quantify agreement and paired t-tests to compare mean nutrient intakes.ResultsThe majority of U.S. adult DS users who participated in IDATA reported DS use on the DHQ (84%) and on ≥2 ASA24s (84%). Among the DS products reported on ≥2 ASA24s and the DHQ, agreement between the two methods ranged from κ = 0.06 (multivitamin) to κ = 0.70 (calcium and vitamin D), with substantial agreement present (κ ≥ 0.61) for iron, omega-3, fish oil, multivitamin-mineral, potassium, vitamin C, and vitamin E products. When evaluating differences in mean nutrient intake reported on ≥2 ASA24s and on the DHQ, no significant differences in calcium or vitamin C intake were observed; however, for vitamin D, large variation in intake was observed between the DHQ (8.3 μg/d) and ≥2 ASA24s (19.9 μg/d).ConclusionsCurrently, no consensus exists on the best method for measuring intake from DS. The comparability of 24 HRs and frequency-based dietary assessment methods in measuring the prevalence of use of and estimating nutrient intakes from DS varies by the nutrient of interest, and the type of DS product consumed.Funding SourcesN/A.