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 OverView
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Dr. Nahla Al-Bayyari
Associate Professor
Ph.D. Human Nutrition and Dietetics, University of Jordan, Amman, 2015
MPH. Maternal and Child Health Care, Jordan University of Science and Technology (JUST), Jordan, 1994
B.A. Public Health Nutrition, Jordan University of Science and Technology (JUST), Jordan, 1990
Bio
Nahla Al-Bayyari is an Associate Professor and Researcher in Human Nutrition and Dietetics. She completed her Ph.D in Human Nutrition and Dietetics in 2015 from the University of Jordan. Her Ph.D study was a double blind placebo controlled clinical trial about Vitamin D and Polycystic Ovary Syndrome. From 1994-1997, Nahla was served as a researcher assistant at JUST and from 1998-2015 as a lecturer at higher education associations, and a chair for the Allied Health Department for two years (2004-2006)/ Jordan College for Science and Technology, Jordan. Dr. Al Bayyari has supervised and examined several Human Nutrition and Dietetics Master students. She also, has published numerous articles in scientific journals and served as an editorial board member and reviewer for several peer-reviewed journals. She has participated in many conferences, courses and research studies all over the world, including Europe, USA, Canada, and some Arab countries.
Dr. Al-bayyari has got research grants from National and International Associations and she was awarded Erasmus + grant for International Credit Staff Mobility KA107 programme at the University of Santiago De Compostela, Lugo, Spain for the academic year 2019-2020. She is a member of The American Society of Nutrition (ASN), the Canadian Nutrition Society (CNS) and the Jordanian Academic Association.
Nahla earned her first degree in Public Health Nutrition from the Faculty of Medicine/ Jordan University of Science and Technology (JUST) in 1990. She worked as a nutritionist in a number of hospitals in Amman, Jordan. In 1991, she was accepted for postgraduate masters-level study in Public Health at the Faculty of Medicine/ Jordan University of Science and Technology (JUST), Jordan. During her study at JUST, she focused on Maternal and Child Health. Her Master?s thesis title was ?The Pattern of Intra-Uterine Fetal Growth in Weight for Normal Singleton Pregnancies in Irbid City.
Employment History and Teaching Areas
Before I relocated to work at Al-Balqa Applied university, I was working on a full-time appointment as lecturer and Director of the Allied Health Department in the Jordan College of Science and Technology in Jordan. During my career I was gained a good academic and administrative experience. As a university teacher, I have had the privilege and pleasure to teach many students. I taught several courses in Nutrition and Public Health such as Community Nutrition, Clinical Nutrition, Dietetics, Diet Therapy, Nutritional Epidemiology, Nutrition Through Life stages, and Nutritional Assessment for Nutrition students at Al-Balqa Applied University in Jordan.
Research and Professional Activities
Holding graduate degrees in medical sciences, public health, and human nutrition and dietetics, I conducted extended research in public health, clinical nutrition, nutritional epidemiology and dietetics with special focus on clinical trials, vitamin D deficiency, polycystic ovary syndrome, diabetes, Hyperhomocysteinemia and its association with obesity, cardiovascular, kidney and liver diseases. Moreover, my research interests have grown to include investigations in the field of Public Health and Nutrition with special focus on cancer and infertility.
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 Research Intersets:
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Public health, Public health nutrition, clinical and therapeutic nutrition, Dietetics, maternal and child nutrition and health, nutritional epidemiology, obesity and metabolic diseases clinical trials on vitamin D, diabetes, obesity, cardiovascular, neoplastic, and thyroid diseases, infertility, reproduction, homocysteine amino acid, medicinal plants and functional foods and cancers.
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 Qualifications
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Degree
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University
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Specialization
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Graduation year
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| 1 | PHD | University of Jordan | Human Nutrition and Dietetics | 2015 | | 2 | MASTER DEGREE | Jordan University of Science and Technology | Public Health | 1994 | | 3 | BACHELOR'S DEGREE | Jordan University of Science and Technology | Public Health | 1990 |
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 Experiences
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Academic Experience:
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 2021 -Current :Associate Professor,Al-Balqa Applied University,Jordan.
2018 -2021 :Assistant Professor,Al-Balqa Applied University,Jordan.
2015 -2018 :Full time lecturer,Al-Balqa Applied University,Jordan.
2006 -2015 :Full time lecturer,Al-Balqa Applied University,Jordan.
2005 -2006 :Part time lecturer,Yarmouk University,Jordan.
2005 -2006 :Part time lecturer,Al-Balqa Applied University,Jordan.
2004 -2005 :Part time lecturer,Jordan College for Science and Technology,Jordan.
2003 -2004 :Volunteer Teacher,Eagle Spring Elementary and Islamic Center of Middle Georgia,United States of America.
2000 -2003 :Part time lecturer,Grnatah College,Jordan.
1996 -1997 :Part time lecturer,Grnatah College,Jordan.
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Administrative Experience:
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 1995 -1996 :Research Assistant,Jordan University of Science and Technology,Jordan.
1991 -1992 :Research Assistant,Jordan University of Science and Technology,Jordan.
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 Publications
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1- Did the COVID-19 Pandemic Influence Neural Tube Defects Incidence in Jordan? ,Jordan Journal of Nursing Research, 2025,Vol. 4,no. 4.
2- Higher dietary diversity and appropriate gestational weight gain reduce the risk of low birth weight: A prospective cohort study ,Nutrition Journal, 2025,Vol. 24,no. 151.
3- Exploring the effects of high protein versus high fat snacks on satiety, gut hormones and insulin secretion in women with overweight and obesity: A randomized clinical trial ,Obesity Pillars, 2025,Vol. 16,no. 100212.
4- Synergistic effects of red beet (beta vulgaris) and calorie-restricted diet on iron deficiency anemia and metabolic syndrome in reproductive-age women ,Romanian Journal of Diabetes Nutrition and Metabolic Diseases, 2025,Vol. 32,no. 2.
5- Gender-Specific Malnutrition and Muscle Depletion in Gastric and Colorectal Cancer: Role of Dietary Intake in a Jordanian Cohort ,NUTRIENTS, 2024,Vol. 16,no. 23.
6- Insulin Leptin and Ghrelin are Correlated with Sex but Not with Age in Healthy Subjects: A Cross-sectional Study ,International Journal of Agriculture and Biosciences, 2024,Vol. 13,no. 4.
7- Dietary diversity and iron deficiency anemia among a cohort of singleton pregnancies: a cross-sectional study ,BMC Public Health, 2024,Vol. 24,no. 1.
8- Dietary intake is not Associated with Body Composition nor with Biochemical tests but Associated with Psychological Status of Cancer Patients Receiving Chemotherapy ,NUTRIENTS, 2023,Vol. 15,no. 24.
9- Call for emergency action to restore dietary diversity and protect global food systems in times of COVID-19 and beyond: Results from a cross-sectional study in 38 countries ,HELIYON, 2023,Vol. 9,no. 11.
10- Impact of COVID-19 lockdown on smoking (waterpipe and cigarette) and participants BMI across various sociodemographic groups in Arab countries in the Mediterranean Region ,Tobacco Induced Diseases, 2022,Vol. 20,no. November.
11- Sex Disparities in Food Consumption Patterns, Dietary Diversity and Determinants of Self-Reported Body Weight Changes Before and Amid the COVID-19 pandemic in 10 Arab Countries ,Frontiers in Public Health, 2022,Vol. 10,no. 1029219.
12- Are STK11 polymorphisms a predictor of the response to metformin in polycystic ovarian syndrome? ,Biomedical Reports, 2022,Vol. 17,no. 2.
13- Dietary intake and lifestyle practices of eastern Mediterranean postpartum women before and during COVID-19 pandemic: An internet-based cross-sectional survey ,Frontiers in Nutrition, 2022,Vol. 9,no. 932418.
14- The Impact of COVID-19 on Physical (In)Activity Behavior in 10 Arab Countries ,International Journal of Environmental Research and Public Health, 2022,Vol. 19,no. 17.
15- Adherence to the United States Department of Agriculture Dietary Recommendations Pre-and During the Coronavirus Disease-19 Pandemic Among Pregnant Women in Arab Countries ,Frontiers in Nutrition, 2022,Vol. 9,no. 824305.
16- Protein intake among patients with insulin-treated diabetes is linked to poor glycemic control: Findings of NHANES data ,Diabetes, Metabolic Syndrome and Obesity, 2022,Vol. 15,no. 0.
17- Dietary Diversity in the Eastern Mediterranean Region before and during the COVID-19 pandemic: Disparities, Challenges and Mitigation Measures ,Frontiers in Nutrition, 2022,Vol. 9,no. 813154.
18- Health-Risk Behaviors and Dietary Patterns among Jordanian College Students: A Pilot Study ,Frontiers in Nutrition, 2021,Vol. 8,no. 632035.
19- Androgens and hirsutism score of overweight women with polycystic ovary syndrome improved after vitamin D treatment: A randomized placebo controlled clinical trial ,Clinical Nutrition, 2021,Vol. 40,no. 3.
20- An evaluation of the COVID-19 pandemic and social distancing policies in relation to planning, selecting, and preparing healthy meals: An observational study in 38 countries worldwide. ,Frontiers in Nutrition, 2021,Vol. 7,no. 621726.
21- Successful dietary intervention plan for Hashimoto?s thyroiditis: A case study ,Romanian Journal of Diabetes Nutrition and Metabolic Diseases, 2020,Vol. 27,no. 4.
22- Obesity and smoking increases risk of coronary heart diseases by lowering the omega-3 index: a cross-sectional study ,La Rivista Italiana delle Sostanze Grasse, 2020,Vol. 97,no. 1.
23- Vitamin D3 reduces risk of cardiovascular and liver diseases by lowering homocysteine levels: double-blinded, randomized, placebo-controlled trial ,British Journal of Nutrition, 2020,Vol. 125,no. 2.
24- Nutritional and Dietary Intervention for Autistic Spectrum Disorders, Mini Review ,International Journal of Pediatrics, 2019,Vol. 7,no. 11.
25- Incidence and impact on prognosis of impaired kidney function in Middle Eastern patients undergoing percutaneous coronary intervention. Results from the first Jordanian PCI Registry (JoPCR1) ,AsiaIntervention, 2019,Vol. 5,no. 1.
26- Habitual use of medicinal plants among a group of Jordanian elderly according to physical activity and gender ,Journal of Pharmacy and Nutrition Sciences, 2019,Vol. 9,no. 1.
27- Effect of Vitamin D3 on Polycystic Ovary Syndrome Prognosis, Anthropometric and Body Composition Parameters of Overweight Women: A Randomized, Placebo-Controlled Clinical Trial ,International Journal of Nutrition and Food Engineering, 2018,Vol. 12,no. 12.
28- Efficacy of High Dose Vitamin D3 Supplementation in Improving Serum 25(OH)D Levels of Overweight Women with Polycystic Ovary Syndrome: Randomized Placebo-Controlled Clinical Trial ,Acta Scientific Nutritional Health, 2018,Vol. 2,no. 10.
29- Common factors associated with child deaths, at a tertiary care center in Irbid government, Jordan ,International Journal of Pediatrics, 2018,Vol. 6,no. 8.
30- Vitamin D3 prevents cardiovascular diseases by lowering serum total homocysteine concentrations in overweight reproductive women: A randomized placebo-controlled clinical trial ,Nutrition Research, 2018,Vol. 59,no. November.
31- Role of vitamin D in the etiology of polycystic ovary syndrome, A review ,CPQ Nutrition, 2018,Vol. 1,no. 3.
32- Assessment of body weight, maternal dietary knowledge, and lifestyle practices among children and adolescents in north Jordan ,PUBLIC HEALTH NUTRITION, 2018,Vol. 21,no. 15.
33- Blood led level and correlation with pregnancy-associated anemia , Australian Medical Journal , 2018,Vol. 11,no. 4.
34- Total homocysteine is positively correlated with body mass index, waist-to-hip ratio, and fat mass among overweight reproductive women: A cross-sectional study ,Nutrition Research, 2017,Vol. 48,no. c.
35- Assessment of atorvastatin effect on body weight and blood glucose levels among diabetic and non-diabetic patients ,Romanian Journal of Diabetes Nutrition and Metabolic Diseases, 2017,Vol. 24,no. 3.
36- Assessment of dietary and life-style behaviors of diabetic and non-diabetic Jordanian atorvastatin users ,Journal of Endocrinology and Diabetes, 2017,Vol. 4,no. 3.
37- The impact of maternal employment on infant weight-, length- and BMI-for-age based upon WHO growth chart standards ,International Journal of Child Health and Nutrition, 2017,Vol. 6,no. 3.
38- Effect of physical activity and Gender on malnutrition risk among a group of elderly Jordanian people ,Pakistan Journal of Nutrition, 2017,Vol. 16,no. 9.
39- The effect of cell phone usage on semen quality and fertility among Jordanian males. ,Middle East Fertility Society Journal, 2017,Vol. 22,no. 3.
40- Liquid Chromatography Tandem Mass Spectrometry Method for Determination of Domperidone in Human Plasma. ,Journal of Chemical and Pharmaceutical Research, 2015,Vol. 7,no. 1.
41- Fetal Weight Normograms for Singleton Pregnancies in a Jordanian Population ,Annals of Saudi Medicine, 2010,Vol. 30,no. 2.
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 University Courses Taught
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1- Nutritional Assessment.
2- Principles of Nutrition.
3- Human Nutrition.
4- Nutrition through life stages.
5- Clinical Nutrition.
6- Seminar in Nutrition.
7- Public Health and First Aid.
8- Child Care.
9- Institutional Food Service Management.
10- Training in Nutrition and food Processing.
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 Master and Phd thesis contributions
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Thesis Supervision
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Comparing the Effect of High-Fat (Peanuts) Versus High-Protein (Plain Greek Yogurt) Snacks on Appetite Hormones and Satiety Among Overweight and Obese Women ,University of Jordan,Master Thesis,2020.
? The effects of compliance with nutritional recommendations and family support on body composition parameters and wellbeing of cancer patients ,Jordan University of Science and Technology,Master Thesis,2017.
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Thesis Defense Committee Membership
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Association Between Dietary Factors and Health-Related Behaviors and The Risk of Depressive and Anxiety Disorders among Jordanian Adults: A Case- Control Study ,University of Jordan,Master Thesis,2024.
Evaluation of Nutrient Intakes and Dietary Patterns as Risk Factors for Inflammatory Bowel Disease and the Degree of Malnutrition in A Selected Sample of Jordanian Adults ,University of Jordan,Master Thesis,2020.
Impact of Sleeping Quality/Duration on Obesity, Morbidity and Health Biomarkers Among Employees of Jordan University of Science and Technology ,Jordan University of Science and Technology,Master Thesis,2017.
The Relationship of Diet Quality and Lifestyle with Abdominal Obesity in Shift Health Care Workers ,Jordan University of Science and Technology,Master Thesis,2016.
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 Honors and Academics Awards
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Award Name
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Donor Name
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Award Year
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Award Country
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| 1 | Visiting Fulbright Postdoctoral Research Scholar | Fulbright | 2023 | United States of America | | 2 | Outstanding Researcher in Nutrition, Public Health Discipline | Venous International Foundation | 2022 | India | | 3 | Jordan Nutrition Innovation Lab fellowship | Gerald J. And Dorothy R. Friedman School of Nutrition Science and Policy, Tufts University | 2022 | United States of America | | 4 | Erasmus + grant for International Credit Staff Mobility KA107 | University of Santiago De Compostela | 2019 | Spain | | 5 | Best Paper Award | (International Research Conference (ICCPHN 2019 | 2019 | Switzerland |
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 Projects
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The Effect of Vitamin D Supplementation on Chromium serum levels and Insulin Resistance among overweight Jordanian Women with Polycystic Ovary Syndrome in Irbid ,Al-Hayat Pharmaceutical Company,2013/09-2014/12.
Dietary Diversity, Gestational Weight Gain and Iron Deficiency Anemia of Mothers Attending Antenatal Clinics in Northern Jordan ,Tufts University,2022/05-2023/02.
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 Conferences and Workshops
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Conference/Workshop Name
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Conference/Workshop Place
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Conference/Workshop Date
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| 1 | ASU Health Science Conference Interdisciplinary Excellence in Healthcare | Jordan | 2025/10 | | 2 | Strengthening the GRAS Process to Improve Food Additive Safety and Protect Human Health | United States of America | 2025/09 | | 3 | Setting the Stage for Determining Dietary Reference Intakes for Macronutrients: Update from the Joint Federal U.S.-Canada DRI Working Group | United States of America | 2025/09 | | 4 | Alumni Proposal Writing Training Workshop | Jordan | 2025/08 | | 5 | The Use of Food Pattern Modeling and Diet Simulations to Improve Healthy Equity of the Dietary Guidelines for Americans | United States of America | 2025/07 | | 6 | Nutrition and Health of Adolescents | United States of America | 2025/06 | | 7 | HUMAN MILK OLIGOSACCHARIDES AND INFANT HEALTH: RECENT FINDINGS AND FUTURE DIRECTIONS | Canada | 2025/06 | | 8 | Applied Epidemiologic Data Analysis Using R Statistics | United States of America | 2024/05 | | 9 | Fulbright Visiting Scholar Workshop on Scientific Manuscript Publishing & Peer Reviews | United States of America | 2024/03 | | 10 | Visiting Fulbright Professional Grant Development Workshop | United States of America | 2023/11 | | 11 | First International Agricultural Technology Conference Innovative Agriculture for Food Security | Jordan | 2023/09 | | 12 | Training on the creation of hybrid learning environment using problem -based learning | Jordan | 2022/12 | | 13 | Smooth the transition of female horticulture graduates into the labour market | Jordan | 2022/11 | | 14 | 4th Annual Scientific Day: Nutrition in the Prevention and Treatment of Diseases | Jordan | 2022/11 | | 15 | The 4th Annual Scientific Day: Nutrition in the Prevention and Treatment of Diseases | Jordan | 2022/11 | | 16 | Jordan Nutrition Innovation Lab. First National Scientific Symposium, Diets, Nutrition, and Health: Promoting Science-Based Actions to Support Mothers, Infants, and Children? | Jordan | 2022/08 | | 17 | Food Security in America: Food Assistance Programs and the Impact on Diet Quality | United States of America | 2022/06 | | 18 | American Society for Nutrition Virtual meeting , Nutrition 2022 | United States of America | 2022/06 | | 19 | American Society of Nutrition Virtual Meeting, Nutrition 2022 Live Online | United States of America | 2022/06 | | 20 | AGING WITH HEALTHY MUSCLES AND BRAIN: NEW PERSPECTIVES ON SARCOPENIA, COGNITION AND NUTRITION | Canada | 2022/05 | | 21 | The 3rd Congress of The Jordanian Society for Obesity Surgery | Jordan | 2022/03 | | 22 | The Sharjah International Conference on EDUCATION IN POST COVID-19 | United Arab Emirates | 2022/03 | | 23 | Pedagogical and technical skills to enhance practice-oriented and student-centered education for TEVET colleges in the Jordan valley | Jordan | 2021/10 | | 24 | MALNUTRITION PREVENTION, DETECTION AND TREATMENT STANDARD 2021: PRACTICAL STRATEGIES FOR ADOPTION | Canada | 2021/10 | | 25 | Curriculum revision process of TEVET colleges in the Jordan Valley using the DACUM method-Phase 1 | Jordan | 2021/02 | | 26 | BIG DATA ? NEW RESOURCES FOR HEALTH RESEARCHERS | Canada | 2020/11 | | 27 | Perioperative and Postoperative Nutrition In Gastrointestinal Surgical Patients | United Arab Emirates | 2020/11 | | 28 | Learning from COVID-19: The Value of Nutrition Across the Care Spectrum | United States of America | 2020/10 | | 29 | Malnutrition Awareness Week 2020 | United States of America | 2020/10 | | 30 | Sarcopenia and Interventions to Improve Function | United States of America | 2020/10 | | 31 | Ask the Expert: Post-ICU Nutrition Care for COVID-19 Survivors | Canada | 2020/06 | | 32 | Advancing the Malnutrition Agenda Part 2: Malnutrition in Hospitalized Children | Canada | 2020/06 | | 33 | Advancing the Malnutrition Agenda Part 1: Malnutrition in Hospitalized Patients | Canada | 2020/06 | | 34 | 2020 PHD DISSERTATION AWARD LECTURE - VITAMIN D IN PREGNANCY: NEW INSIGHTS FOR CANADIAN WOMEN | Canada | 2020/05 | | 35 | Intermittent fasting & Immunity Amid COVID-19 | United Arab Emirates | 2020/05 | | 36 | The 2nd Scientific Symposium of Jordanian Dietitian Association, Recent Approaches in Nutrition & Health | Jordan | 2018/12 | | 37 | The 1st Jordanian Society for Obesity Surgery & 2nd Pan-Arab Society for Metabolic and Bariatric Surgery PASMBS Congress | Jordan | 2018/07 | | 38 | Abu-Dhabi Annual International Conference on Vitamin D Deficiency and Human Health | United Arab Emirates | 2018/03 | | 39 | Clinical & Public Health Nutrition | Switzerland | 2018/01 | | 40 | Data collection and Analysis via Online Survey | Jordan | 2017/08 | | 41 | Statistical Analysis SPSS | Jordan | 2017/05 | | 42 | The First Scientific Agricultural Conference | Jordan | 2016/12 | | 43 | نحو آفاق فنية وتحديات صحية | Jordan | 2016/04 | | 44 | The Seventh Conference on Scientific Research in Jordan | Jordan | 2015/11 | | 45 | Updates in Nutritional Management of Diabetics and Elderly | Jordan | 2011/11 | | 46 | The Arab fourth Conference in Nutrition | Jordan | 2011/04 | | 47 | How to be a leader | Jordan | 2009/04 | | 48 | International Computer Driving License (ICDL) | Jordan | 2009/01 |
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 Books
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Book Name
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Publisher Name
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Year
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| 1 | مبادئ في الصحة والسلامة العامة | المسيرة | 2002 |
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 Journals Editor/ Reviewer
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Editors
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Nutrition and Health Sciences Journal.
ACTA Scientific Nutritional Health Journal.
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Review:
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Frontiers in Nutrition.
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* Free Medical day organizer.
* Nutrition and Health. Lecture for Yarmouk and JUST medicine students.
* Lecture: Nutrition For Autistic patients.
* Enteral and Parental Nutrition Support: A lecture for Dietitians.
* Nutrition Intervention for Cystic Fibrosis. A lecture for Dietitians.
* How to be a Leader Training Workshop.
* Community Health Education Lectures in H1N1 (Swine Flu).
* Organizer and scientific committee member, Scientific Day, Prospects of Food and Nutrition.
* Nutrition During Ramadan: A lecture for Al-Huson University College faculty and administrative members and student.
* Role of Vitamin D in Polycystic Ovary Syndrome. A lecture for Dietitians.
* Nutrition Care for Covid-19 Patients: Insights on Critically Ill Patients. A lecture for Dietitians.
* Celiac Disease Awareness Day Organizer.
* Nutrition for cancer patients.
* Assessment of the health and nutritional status of women visiting the Hakama Comprehensive Health Center on the occasion of Mothers Day.
* "Launching the initiative "A glass of olive oil saves the health of a home.
* Delivering an introductory lecture about Al-Balqa Applied University and the Hashemite Kingdom of Jordan at the University of Michigan-Ann Arbor, USA.
* Nutritional Interventions for Celiac Disease: Benefits, Challenges, and Recent Research Updates: Lecture and Awareness Session.
* First aid workshop training for Al-Huson University College workers.
* Best Gluten Free food product competition organizer for Nutrition and Food Processing Students.
* A lecture on nutrition for autism patients was given to educational supervisors in special needs schools and families of autism patients in the Irbid Greater Municipality Hall..
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 Refrences
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Dr. Ana Baylin-University of Michigan-Ann Arbor ,abaylin@umich.edu.
Prof. Dr. Hayder Al-Domi-The University of Jordan ,h.aldomi@ju.edu.jo.
Prof. Dr. Karen Peterson-University of Michigan-Ann Arbor ,karenep@umich.edu.
Prof. Dr. Hiba Bawadi-Qatar University ,hbawadi@qu.edu.qa.
Dr. Andrew Jones-University of Michigan-Ann Arbor ,jonesand@umich.edu.
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