BACKGROUND: Dietary supplements (DS) use has substantially become prevalent worldwide. However, a limited number of studies have addressed the consumption of DS among college students. AIM: The objective of the study was to explore the prevalence of DS use among college students in an Egyptian college, their motives for DS use, and the association with sociodemographic and lifestyle factors. METHODS: A cross-sectional study was conducted on 180 (18–25 years) college students at Helwan University. A self-administered questionnaire that included sociodemographic and lifestyle characteristics, DS use, commonly used types, reasons for use, and sources of information was employed. RESULTS: More than two-thirds of the participants (117 students) have used DS with no difference among sex except for the types and motives for use (p < 0.001). The most used types were amino acids and proteins, multivitamins and minerals, and weight-loss herbals. Male students mainly used amino acids and proteins (54.7%), multivitamins, and minerals (17.2%), for building muscles (50%), gaining more energy (14%), and maintaining good health (14%). Female students consumed multivitamins and minerals (35.8%), weight-loss herbals (28.3%), for health promotion (34%) and weight management (28.3%). The main sources of information were the internet, health-care providers, and coaches. Male users depended primarily on the internet; however, female users received information from health-care providers (p < 0.001). Practicing exercise, non-smoking, and dietary patterns were associated with DS use. CONCLUSION: DS use is remarkably common among college students in Egypt since their freshmen year. The findings highlight an urgent need to raise students’ awareness regarding the appropriate use of DS from reliable sources to control DS use and prevent adverse effects.
تعد عملية تقييم مواضع السدود من المواضيع المهمة الذي يتطلب الأمر توفير المعلومات الضرورية عن بيئة موضع السد بهدف اختيار الموضع المناسب لإنشائه، لتفادي المشاكل والآثار السلبية الناتجة عن الاختيار غير الملائم لموضع السد. وتهدف الدراسة الحالية الى تحديد أفضل موضع لأنشاء سد (لينافا) لتحقيق هدفين أولهما حجز وتجميع المياه للاستفادة منها في المواسم الجافة كأحد اليات الحصاد المائي، وثانيهما تغذية بحيرة سد دهوك بالكميات المخزونة (منطقة أعالي حوض التغذية)، فضلا عن حجز كميات إضافية من المياه في المواسم الوفيرة دون هدرها بشكل غير مبرر (وتعد خزينا سطحيا لبحيرة سد دهوك) كما حدث في الموسم المطير 2019ـ 2020. تبنت الدراسة اختيار أربع مستويات لارتفاع السد المتوقع (لينافا) وفق الطبيعة التضاريسية ، وعندها تباينت كميات الخزن المائي، قدرت الطاقة الخزينة للسد عند ارتفاع (10 م) ب(103475 م3)، أما عند ارتفاع (15م)، قدرت كمية المياه المتجمعة ب (158847 م3)، فيما بلغ تقديرات حجم المياه المتوقعة عند ارتفاع (18م) ب (348125 م3) فيما بلغ الطاقة الخزنية المتوقعة للمياه (438443 م3) عند ارتفاع (20 م)
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