scholarly journals A Nationwide Survey of the Attitudes toward the Use of Dietary Supplements among Japanese High-School Students

Nutrients ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1469 ◽  
Author(s):  
Chiharu Nishijima ◽  
Etsuko Kobayashi ◽  
Yoko Sato ◽  
Tsuyoshi Chiba

We previously studied the prevalence of dietary supplement use in Japanese high-school students by conducting a study on mothers. However, there is often a discrepancy between mothers’ understanding and children’s attitudes. Thus, we conducted an internet survey of high-school students to clarify their attitudes toward the use of dietary supplements. An invitation to the internet survey was e-mailed to registrants of a research company aged 15 to 18 years. A total of 1031 students (276 male, 755 female) answered the questionnaire on a first come, first served basis. The participants were classified according to the purchasers of their supplements: students who purchased supplements themselves were defined as active users, and others were defined as passive users. The prevalence of dietary supplement use was 30.8% in males and 26.7% in females. Among the users, 42.4% of males and 43.8% of females were active users. Males used supplements for health regardless of active or passive use. However, in females, more active users (40.9%) used supplements for weight loss than passive users (20.4%); the corresponding prevalence was 2.3% in our previous report on mothers’ understanding of their daughters. The most frequently used source of information for active users was the internet, whereas for passive users it was family. The frequency of adverse events was 9.4% in males and 14.4% in females, with gastrointestinal symptoms being the most commonly experienced events. Our results suggest that dietary education, including healthy eating and the appropriate use of dietary supplements, should be provided to high-school students.

Nutrients ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 1176 ◽  
Author(s):  
Etsuko Kobayashi ◽  
Chiharu Nishijima ◽  
Yoko Sato ◽  
Keizo Umegaki ◽  
Tsuyoshi Chiba

The prevalence of dietary supplement use, such as vitamins, minerals, or fish oil, has increased among children in Japan; however, whether children are using dietary supplements appropriately remains unclear. This study aimed to determine dietary supplement use among children. In August 2017, a nationwide internet preliminary survey of 265,629 mothers aged from 25 to 59 years old was undertaken. Of these, 19,041 mothers of children attending either elementary school, junior high school, or high school were selected. Among them, 16.4% were currently providing their children with dietary supplements and 5.2% had previously given dietary supplements to their children. The prevalence of dietary supplement use was higher in boys than in girls, and the prevalence increased according to their grade. A total of 2439 participants were eligible to undertake a targeted survey on dietary supplement use. Dietary supplements were being taken to maintain health, supplement nutrients, and enhance growth in both boys and girls, and many children (37.5%) were provided with vitamin and mineral supplements. Mothers mainly obtained information concerning dietary supplements via the internet, and supplements were purchased in drug stores or via the internet. The prevalence of dietary supplement use in mothers was 65.4% and may be associated with the prevalence rates in children. Some mothers reported adverse events (3.6%) in their children, such as stomachache, diarrhea, nausea and vomiting, and constipation. The cause-and-effect relationships for adverse events were not clear, but some children were given products for adults. Children are more influenced by dietary supplements compared to adults. To prevent adverse events due to inappropriate use, parental education concerning dietary supplements is essential.


Author(s):  
Hanmei Liu ◽  
Shiya Zhang ◽  
Hanshuang Zou ◽  
Yuanlin Pan ◽  
Qiping Yang ◽  
...  

Dietary supplement use is increasing globally, especially among children. However, few studies have been conducted to examine dietary supplement use among Chinese children. The aim of this study was to examine the prevalence of dietary supplement use and the associated factors in primary school students. A cross-sectional study was conducted in four primary schools in Hunan province, China. A total of 706 Chinese parents/caregivers of school children aged 6–12 years old were enrolled. Self-administrated questionnaires were used to collect information about the children’s dietary supplement use, and their socio-demographic characteristics. The prevalence of dietary supplement use in primary school students was 20.4%. Calcium (16.7%), vitamin C (9.2%), and vitamin D (8.5%) were the most commonly used types of dietary supplement. The main reasons for parents/caregivers to purchase dietary supplements for their children were immunity improvement (43.6%), and for growth promotion (36.5%). Some caregivers (26.4%) purchased dietary supplements online, including from dubious or unknown sellers. However, 37.5% of caregivers did not receive formal guidance on supplementation even if they purchased their supplements through formal channels. Parents/caregivers were unclear about the appropriate choices for children’s dietary supplement use. Guidelines and counseling regarding dietary supplements for children may be helpful in public health work.


2021 ◽  
Vol 5 (Supplement_2) ◽  
pp. 650-650
Author(s):  
Fumi Hoshino ◽  
Arisa Kojima ◽  
Ayaka Yano ◽  
Haruna Yamamoto ◽  
Saya Natsui ◽  
...  

Abstract Objectives The purpose of this study was to investigate the availability of information on dietary supplements as well as their use among high school students in Niigata Prefecture, Japan. It also aimed to clarify the relationship between dietary awareness and the use of dietary supplements. Methods The survey was conducted online using Google Forms and asked about sex, age, height, weight, experience with supplements (current use, past use, or never used any use), types of supplements used, sources of information about supplements, and eating habits. The survey was conducted in high schools in Niigata Prefecture, Japan, in September 2020. The study was approved by the ethics committee of the Niigata University of Health and Welfare. Statistical analysis was conducted using R version 4.0.2 (2020–06-22), and comparisons between the two groups were made using the t test or χ² test with a significance level of 5%. Results A total of 317 subjects were analyzed, including 151 (47.6%) boys and 166 (52.4%) girls. Thirty-seven boys and 21 girls currently used supplements, while 32 boys and 29 girls used supplements in the past. The percentage of boys using supplements (currently or in the past) was 45.6%, which was significantly higher than that of girls (30.1%) (P = 0.004). The most commonly used supplements for boys were protein (57), vitamin C (22), and amino acids (19) and for girls were vitamin C (29), iron (15), and protein (13). The most common reason among boys for using supplements was “for muscle building” (n = 41, 59.4%) and among girls was “for diet and beauty” (n = 26, 52.0%). The most common source of information about supplements was the family, followed by the internet and social media. Girls who used supplements were clearly highly conscious about eating (P = 0.048). Conclusions Among Japanese high school students, boys had more experience using dietary supplements than girls. Female students who used supplements were more conscious, rather than neglectful, of their diet. Funding Sources Individual research expenses at Niigata University of Health and Welfare.


Nutrients ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2960 ◽  
Author(s):  
Etsuko Kobayashi ◽  
Yoko Sato ◽  
Chiharu Nishijima ◽  
Tsuyoshi Chiba

Dietary supplement use is widespread amongst the general population including in children and adolescents. The ingredients in dietary supplements can interact with medicines when patients take them concomitantly. However, the prevalence of the concomitant use of dietary supplements and medicines in Japan among children remains unclear. To clarify this issue, a nationwide internet survey was administered to 55,038 mothers (25 to 60 years old) of preschool- or school-aged children in Japan. Among them, 7.6% currently provide dietary supplements and 3.2% concomitantly provide dietary supplements and prescription or over-the-counter medicines to their children. The prevalence of concomitant use increased with the children’s grade. Among 1057 mothers with 1154 children who were concomitantly using dietary supplements and medicines, 69.1% provided dietary supplements without physician consultation because they considered dietary supplements as only foods and therefore safe. Although the purpose of the use and types of dietary supplement differed between boys and girls, the most popular product was probiotics in both boys and girls. Among concomitant users, 8.3% of mothers gave dietary supplements for treatment of diseases and 4.9% mothers recognized the adverse events of dietary supplements in their child. The findings of this study suggest that mothers’ knowledge about the risk of using dietary supplement with medicines is insufficient. Parental education about the safety of dietary supplements and potential risk of drug–supplement interaction is needed.


2021 ◽  
Vol 26 (1) ◽  
Author(s):  
Kazue Ishitsuka ◽  
Satoshi Sasaki ◽  
Hidetoshi Mezawa ◽  
Mizuho Konishi ◽  
Maki Igarashi ◽  
...  

Abstract Background A variety of dietary supplements are commercially available. However, the efficacy and safety of dietary supplement use in children are not well established. Understanding dietary supplement use is important for developing public health policy regarding dietary supplements. This study aimed to investigate the types of dietary supplements used and characteristics of dietary supplement users among Japanese elementary school children. Method We conducted a cross-sectional web-based questionnaire study. Dietary supplement use, socio-demographics, and health-related behaviors were assessed through mother-reported questionnaire. Types of dietary supplements were identified based on ingredient using product barcodes and brand names. Multivariate logistic regression analysis was conducted to investigate the socio-demographics and health-related behaviors associated with supplement use. Results Among 4933 children, 333 (6.8%) were identified as dietary supplement users. The most common supplement was amino acids or protein (1.4%), followed by n–3 fatty acids or fish oil (1.0%), probiotics (1.0%), multivitamins (0.9%), multivitamin-minerals (0.8%), and botanicals (0.8%). Overall, any dietary supplement use was significantly associated with the highest frequency of sports participation (odds ratio [OR], 2.58; 95% confidence interval [CI], 1.65–4.02), highest household income (OR, 1.87; 95% CI, 1.13–3.10), highest maternal educational level (OR, 1.82; 95% CI, 1.31–2.52), and male sex (OR, 1.38; 95% CI, 1.09–1.75). The highest frequency of sports participation was significantly associated with higher odds of use of amino acids or protein (OR, 6.06; 95% CI, 1.78–20.6) and multivitamins (OR, 3.56; 95% CI, 1.11–11.5), compared to the lowest frequency of sports participation. Conclusion This study showed that Japanese children primarily use non-vitamin, non-mineral supplements. Non-vitamin, non-mineral supplements should thus be included in future studies aimed at monitoring dietary supplement use. We also found that dietary supplement use in children was associated with sports participation. Guidelines for dietary supplement use for children, in particular sport participants, are needed.


2011 ◽  
Vol 27 (6) ◽  
pp. 503-515 ◽  
Author(s):  
R.A. Ellis ◽  
P. Goodyear ◽  
A.-M. Bliuc ◽  
M. Ellis

2013 ◽  
Vol 16 (8) ◽  
pp. 1390-1402 ◽  
Author(s):  
Carin Andrén Aronsson ◽  
Kendra Vehik ◽  
Jimin Yang ◽  
Ulla Uusitalo ◽  
Kristen Hay ◽  
...  

AbstractObjectivesThe aim of the present study was to examine the prevalence and associated factors of dietary supplement use, particularly supplements containing vitamin D and fatty acids, in pregnant women enrolled in a multi-national study.DesignThe Environmental Determinants of Diabetes in the Young (TEDDY) study is a prospective longitudinal cohort study. Maternal dietary supplement use was self-reported through questionnaires at month 3 to 4 postpartum.SettingSix clinical research centres; three in the USA (Colorado, Georgia/Florida and Washington) and three in Europe (Sweden, Finland and Germany).SubjectsMothers (n 7326) to infants screened for high-risk HLA-DQ genotypes of type 1 diabetes.ResultsNinety-two per cent of the 7326 women used one or more types of supplement during pregnancy. Vitamin D supplements were taken by 65 % of the women, with the highest proportion of users in the USA (80·5 %). Overall, 16 % of the women reported taking fatty acid supplements and a growing trend was seen in all countries between 2004 and 2010 (P < 0·0001). The use was more common in Germany (32 %) and the USA (24 %) compared with Finland (8·5 %) and Sweden (7·0 %). Being pregnant with the first child was a strong predictor for any supplement use in all countries. Low maternal age (<25 years), higher education, BMI ≥ 25·0 kg/m2 and smoking during pregnancy were factors associated with supplement use in some but not all countries.ConclusionsThe majority of the women used dietary supplements during pregnancy. The use was associated with sociodemographic and behavioural factors, such as parity, maternal age, education, BMI and maternal smoking.


2020 ◽  
Vol 4 (2) ◽  
pp. 130-140
Author(s):  
Tkach Yulya ◽  
Okopny Andriy ◽  
Kharchenko-Baranetska Lyudmila ◽  
Stepanyuk Svitlana ◽  
Pityn Maryan

Introduction. Modern curriculum («Physical culture 10-11 classes») for the last decades is developed according to requirements of operating standards of basic and full general secondary education. In particular on a modular system Aim is to find out the changes of technical preparedness of high school students according to the results of implementation the variable module "Wrestling". Material and methods. There were used theoretical analysis and generalization of scientific and methodical data and sources of the Internet, analysis of documentary materials, pedagogical testing, pedagogical experiment (there was tested the effectiveness of the developed variable module "Wrestling" in the physical education of high school students in secondary schools), methods of mathematical statistics. During the 2017-2019, school years were involved 53 students of 10 classes (31 boys and 22 girls) and 74 students of 11 classes (41 boys and 33 girls). Results. Analysis of the 10th grade boys’ results indicated the presence of significant changes a high level (p≤0.01). In all cases, the average scores improved by 0.54-0.71 points (from 16.79% to 22.66% of initial level). The girls of the 10th grade best realized the technical and tactical elements standing - dumping, beating (24.76% improvement from the initial level) and on the ground - twists and somersault (24.51%, respectively). For 11th grade boys technical and tactical improvement there was on the level of p≤0.05(9.35–18.45% of the initial level). According to the percentage values for 11th grade girls, in general, there were changes in grades by 10.67–21.13% from the initial level. Conclusions. It was found that in most technical and tactical elements, girls show higher relative rates of improvement. The only exception is in somersault with running, where the boys had the best changes. The factors of this are the better functional start an organism of young people at the beginning of the pedagogical experiment and higher indicators of fitness, which all owed to better master the technique of the wrestling elements at the beginning of the variable module. The girls gradually increased both fitness and technique of performing theses pacificelements of wrestling.


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