Risk Factors for Maternal Vitamin D Deficiency within the United Arab Emirates

Hussein, I., Taha, Z., Tewfik, I., Badawi, S., Siddieg, H., Adegboye, A.R. and McGrady, K. 2016. Risk Factors for Maternal Vitamin D Deficiency within the United Arab Emirates. Journal of Pregnancy and Child Health. 3 (5), p. 1000276 1000276. https://doi.org/10.4172/2376-127X.1000276

TitleRisk Factors for Maternal Vitamin D Deficiency within the United Arab Emirates
AuthorsHussein, I.
Taha, Z.
Tewfik, I.
Badawi, S.
Siddieg, H.
Adegboye, A.R.
McGrady, K.
Abstract

Introduction: Vitamin D deficiency during pregnancy is a public health problem and it has been associated with
negative pregnancy outcomes for both mothers and infants.
Aim: To estimate the prevalence of vitamin D deficiency in pregnant women in the United Arab Emirates (UAE) and to identify the contribution of risk factors to the 25(OH)D levels.
Methods: It is a cross-sectional study in which vitamin D levels of 1088 adult pregnant women were assessed. Information on vitamin D intake was available in a sub-sample of 266 women.
Results: The mean serum 25(OH)D was 26.2 nmol/L (95% CI 25.2-27.1 range 5-129.1 nmol/L) with 69% of women being vitamin D deficient (<30 nmol/L). In the bivariate analysis, showed that no predictors could have been indicated as no values exceeded significance (p<0.2). Stepwise multiple linear regression analysis could not be applied to identify predictors of vitamin D levels as no values exceeded p=0.2.
Conclusion: Due to the high prevalence of vitamin deficiency in UAE, there is an urge for interventions focusing on supplementation, fortification and diet diversity for preventing health consequences during a critical period of development.

KeywordsVitamin D; Pregnancy; United Arab Emirates; Cross- sectional study
Article number1000276
JournalJournal of Pregnancy and Child Health
Journal citation3 (5), p. 1000276
ISSN2376-127X
Year2016
PublisherOMICS Publishing Group
Publisher's version
Digital Object Identifier (DOI)https://doi.org/10.4172/2376-127X.1000276
Web address (URL)http://www.omicsgroup.org/journals/risk-factors-for-maternal-vitamin-d-deficiency-within-the-united-arab-emirates-2376-127X-1000276.pdf
Publication dates
Published30 Sep 2016
LicenseCC BY 2.0

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Adegboye, A.R., Sengupta, R., Gimovsky, A., Wei, S., Bamigboye, A.A., Berghella, V. and Fraser, W.D. 2015. Interventions for improving pregnancy outcome in antenatally diagnosed or suspected morbidly adherent placenta (Protocol). The Cochrane Library.

The effect of alcohol consumption on periodontitis in older Danes
Adegboye, A.R., Hach, M., Holm-Pedersen, P. and Avlund, K. 2015. The effect of alcohol consumption on periodontitis in older Danes. International Journal of Dental Hygiene. 13 (4), p. 261–267. https://doi.org/10.1111/idh.12121

A public health nutrition intervention to delay the progression of cachexia to refractory cachexia in Indian female cancer patients: A conceptual framework
Tewfik, I. 2014. A public health nutrition intervention to delay the progression of cachexia to refractory cachexia in Indian female cancer patients: A conceptual framework. International Journal of Food, Nutrition and Public Health. 7 (1).

Therapeutic antioxidant activity of monascus-fermented durian seed: a potential functional food ingredient, Ignatius Srianta, Ira Nugerahani, Netty Kusumawati, Elisabet Suryatanijaya, Christine Subianto, Sundus Tewfik and Ihab Tewfik
Srianta I., Nugerahani, I., Kusumawati, N., Suryatanijaya, E., Subianto, C., Tewfik S. and Tewfik, I. 2014. Therapeutic antioxidant activity of monascus-fermented durian seed: a potential functional food ingredient, Ignatius Srianta, Ira Nugerahani, Netty Kusumawati, Elisabet Suryatanijaya, Christine Subianto, Sundus Tewfik and Ihab Tewfik. International Journal of Food, Nutrition and Public Health. 7 (1).

Physical activity delivered in workplace: A pilot study to assess the health outcomes among employees at work
Hammarberg, E., Papp, R., Gaywood, A., Ferraroli, J. and Tewfik, I. 2014. Physical activity delivered in workplace: A pilot study to assess the health outcomes among employees at work. International Journal of Food, Nutrition and Public Health. 7 (1), pp. 41-52.

Tailored Functional Recipe (TFR) Approach to Delay the Progression of HIV to AIDS among People Living with HIV (PLWH) in Abuja, Nigeria
Amlogu A.M., Tewfik S., Wambebe C., Godden K. and Tewfik, I. 2014. Tailored Functional Recipe (TFR) Approach to Delay the Progression of HIV to AIDS among People Living with HIV (PLWH) in Abuja, Nigeria. Pharmacology & Pharmacy. 5 (10), pp. 926-936. https://doi.org/10.4236/pp.2014.510104

The impact of tailored nutrition intervention and dietary counseling on body weight in female cancer cachexia patients in India
Kapoor N., Naufahu, J., Tewfik, S., Bhatnagar, S., Gargand, R. and Tewfik, I. 2014. The impact of tailored nutrition intervention and dietary counseling on body weight in female cancer cachexia patients in India. Journal of Clinical Oncology. 32 (31), p. 67.

American skullcap (Scutellaria lateriflora): a randomised, double-blind placebo-controlled crossover study of its effects on mood in healthy volunteers
Brock, C., Whitehouse, J., Tewfik, I. and Towell, A. 2014. American skullcap (Scutellaria lateriflora): a randomised, double-blind placebo-controlled crossover study of its effects on mood in healthy volunteers. Phytotherapy Research. 28 (5), pp. 692-698. https://doi.org/10.1002/ptr.5044

Identity issues surrounding American skullcap (Scutellaria lateriflora) and an optimised high performance liquid chromatography method to authenticate commercially available products
Brock, C., Whitehouse, J., Tewfik, I. and Towell, A. 2013. Identity issues surrounding American skullcap (Scutellaria lateriflora) and an optimised high performance liquid chromatography method to authenticate commercially available products. Journal of Herbal Medicine. 3 (2), pp. 57-64. https://doi.org/10.1016/j.hermed.2013.02.001

Public Health Nutrition Intervention Programme to Attenuate the Progression of HIV to AIDS among People Living with HIV (PLWH) in Abuja, Nigeria: A Conceptual Framework
Amlogu, A.M., Godden, K. and Tewfik, I. 2013. Public Health Nutrition Intervention Programme to Attenuate the Progression of HIV to AIDS among People Living with HIV (PLWH) in Abuja, Nigeria: A Conceptual Framework. International Journal of Food, Nutrition and Public Health. 6 (1), pp. 83-98.

The impact of dietary and lifestyle factors on the risk of dental caries among young children in Qatar
Bener, A., Al Darwish, Mohammed S., Tewfik, I. and Hoffmann, Georg F. 2013. The impact of dietary and lifestyle factors on the risk of dental caries among young children in Qatar. Journal of the Egyptian Public Health Association. 88 (2), pp. 67-73. https://doi.org/10.1097/01.EPX.0000430962.70261.8e

Associations between initial change in physical activity level and subsequent change in regional body fat distributions
Adegboye, A.R., Ezekwe, K.A., Gamborg, M. and Heitmann, B.L. 2013. Associations between initial change in physical activity level and subsequent change in regional body fat distributions. Obesity Facts. 6 (6), pp. 552-560. https://doi.org/10.1159/000357366

Intakes of calcium, vitamin D, and dairy servings and dental plaque in older Danish adults
Adegboye, A.R., Christensen, L.B., Holm-Pedersen, P., Boucher, B.J., Heitmann, B.L. and Avlund, K. 2013. Intakes of calcium, vitamin D, and dairy servings and dental plaque in older Danish adults. Nutrition Journal. 12 (61). https://doi.org/10.1186/1475-2891-12-61

C-reactive protein and later preeclampsia: systematic review and meta-analysis taking into account the weight status
Adegboye, A.R., Rebelo, F., Schlüssel, M.M., Vaz, J.S., Franco-Sena, A.B., Pinto, T.J., Bastos, F.I. and Kac, G. 2013. C-reactive protein and later preeclampsia: systematic review and meta-analysis taking into account the weight status. Journal of Hypertension. 31 (1), pp. 16-26. https://doi.org/10.1097/HJH.0b013e32835b0556

Diet or exercise, or both, for weight reduction in women after childbirth
Adegboye, A.R., Lourenço, P.M. and Linné, Y. 2013. Diet or exercise, or both, for weight reduction in women after childbirth. Cochrane Database Syst Rev.. https://doi.org/10.1002/14651858.CD005627.pub3

Hepatic mitochondrial dysfunction induced by fatty acids and ethanol
Gyamfi, D., Everitt, H.E., Tewfik, I., Clemens, D.L. and Patel, V. 2012. Hepatic mitochondrial dysfunction induced by fatty acids and ethanol. Free Radical Biology & Medicine. 53 (11), pp. 2131-2145. https://doi.org/10.1016/j.freeradbiomed.2012.09.024

The use of Scutellaria lateriflora: a pilot survey amongst herbal medicine practitioners
Brock, C., Whitehouse, J., Tewfik, I. and Towell, A. 2012. The use of Scutellaria lateriflora: a pilot survey amongst herbal medicine practitioners. Journal of Herbal Medicine. 2 (2), pp. 34-41. https://doi.org/10.1016/j.hermed.2012.04.005,

Tailored food recipes-TFR: employing the European perspective
Amlogu, A.M., Godden, K., Tewfik, S., Wambebe, C. & and Tewfik, I. 2012. Tailored food recipes-TFR: employing the European perspective. International Journal of Food, Nutrition and Public Health. 5 (1/2/3), pp. 3-18.

Diet or exercise, or both, for weight reduction in women carrying excess weight after childbirth
Adegboye, A.R. and Linné, Y. 2012. Diet or exercise, or both, for weight reduction in women carrying excess weight after childbirth. The Cochrane Library.

Short-term pre-pregnancy health education may improve maternal nutrition behavior, but not nutrition self-efficacy
Adegboye, A.R. 2012. Short-term pre-pregnancy health education may improve maternal nutrition behavior, but not nutrition self-efficacy. Zahedan University of Medical Sciences.

Intake of dairy products in relation to periodontitis in older Danish adults
Adegboye, A.R., Heitmann, B.L., Christensen, L.B., Holm-Pedersen, P. and Boucher, B.J. 2012. Intake of dairy products in relation to periodontitis in older Danish adults. Nutrients. 4 (9), p. 1219–1229. https://doi.org/10.3390/nu4091219

Influence of parental overweight on the association of birth weight and fat distribution later in childhood
Adegboye, A.R., Andersen, L.B., Wedderkopp, N. and Heitmann, B.L. 2012. Influence of parental overweight on the association of birth weight and fat distribution later in childhood. Obesity Facts. 5 (5), pp. 784-794. https://doi.org/10.1159/000343916

Intake of dairy calcium and tooth loss among adult Danish men and women
Adegboye, A.R., Twetman, S., Christensen, L.B. and Heitmann, B.L. 2012. Intake of dairy calcium and tooth loss among adult Danish men and women. Nutrition: The International Journal of Applied and Basic Nutritional Sciences. 28 (7-8), pp. 779-784. https://doi.org/10.1016/j.nut.2011.11.011

Obesity and low vision as a result of excessive internet use, and television viewing
Bener, A., Al-Mahdi, H.S., Ali, A.I., Al-Nufal, M., Vachhani, P.J. and Tewfik, I. 2011. Obesity and low vision as a result of excessive internet use, and television viewing. International Journal of Food Sciences and Nutrition. 62 (1), pp. 60-62. https://doi.org/10.3109/09637486.2010.495711

Artificial trans fatty acids in food supply: A global health threat
Salomaa V.K. and Tewfik, I. 2011. Artificial trans fatty acids in food supply: A global health threat. World Journal of Science, Technology and Sustainable Development. 8 (4), pp. 361-401. https://doi.org/10.1108/20425945201100017

Systematic review of clinical trials on dietary interventions to prevent excessive weight gain during pregnancy among normal weight, overweight and obese women
Adegboye, A.R., Tanentsapf, I. and Heitmann, B.L. 2011. Systematic review of clinical trials on dietary interventions to prevent excessive weight gain during pregnancy among normal weight, overweight and obese women. BMC Pregnancy Childbirth. 11 (1). https://doi.org/10.1186/1471-2393-11-81

Recommended aerobic fitness level for metabolic health in children and adolescents: a study of diagnostic accuracy
Adegboye, A.R., Anderssen, S.A., Froberg, K., Sardinha, L.B., Heitmann, B.L., Steene-Johannessen, J., Kolle, E. and Andersen, L.B. 2011. Recommended aerobic fitness level for metabolic health in children and adolescents: a study of diagnostic accuracy. British Journal of Sports Medicine. 45 (9), pp. 722-728. https://doi.org/10.1136/bjsm.2009.068346

Globesity in action: systematic review and pilot intervention to assess the potential health benefit of moderate physical activity
Salah, M. and Tewfik, I. 2011. Globesity in action: systematic review and pilot intervention to assess the potential health benefit of moderate physical activity. in: Ahmed, A. and Busler, M. (ed.) World sustainable development outlook 2011. Sharing knowledge, making a difference: the role of international scientific cooperation World Association for Sustainable Development (WASD).

Conceptual framework of public health-nutrition intervention programme to attenuate the progression of HIV to AIDS among people living with HIV (PLWH) in Abuja, Nigeria
Amlogu, M.A., Tewfik, S., Wambebe, C., Godden, K. and Tewfik, I. 2011. Conceptual framework of public health-nutrition intervention programme to attenuate the progression of HIV to AIDS among people living with HIV (PLWH) in Abuja, Nigeria. in: Ahmed, A. and Busler, M. (ed.) World sustainable development outlook 2011. Sharing knowledge, making a difference: the role of international scientific cooperation World Association for Sustainable Development (WASD). pp. 11-20

American skullcap (Scutellaria lateriflora): an ancient remedy for today’s anxiety?
Brock, C., Whitehouse, J., Tewfik, I. and Towell, A. 2010. American skullcap (Scutellaria lateriflora): an ancient remedy for today’s anxiety? British Journal of Wellbeing. 1 (4), pp. 25-30.

Low calcium intake is related to increased risk of tooth loss in men
Adegboye, A.R., Fiehn, N.E., Twetman, S., Christensen, L.B. and Heitmann, B.L. 2010. Low calcium intake is related to increased risk of tooth loss in men. Journal of Nutrition. 140 (10), pp. 1864-1868. https://doi.org/10.3945/jn.109.117770

Linking definition of childhood and adolescent obesity to current health outcomes
Adegboye, A.R., Andersen, L.B., Froberg, K., Sardinha, L.B. and Heitmann, B.L. 2010. Linking definition of childhood and adolescent obesity to current health outcomes. International Journal of Pediatric Obesity. 5 (2), pp. 130-142. https://doi.org/10.3109/17477160903111730

Relationships between prenatal smoking cessation, gestational weight gain and maternal lifestyle characteristics
Adegboye, A.R., Rössner, S., Neovius, M., Lourenço, P.M. and Linné, Y. 2010. Relationships between prenatal smoking cessation, gestational weight gain and maternal lifestyle characteristics. Women and Birth. 23 (1), pp. 29-35. https://doi.org/10.1016/j.wombi.2009.05.002

Is Africa facing a nutrition transition under the double burden of disease?
Tewfik, I., Bener, A. and Tewfik, S. 2010. Is Africa facing a nutrition transition under the double burden of disease? in: Ahmed, A. and Nwankwo, S. (ed.) Achieving sustainable development in Africa: science, technology & innovation trajectory London World Association for Sustainable Development (WASD).

Childhood obesity prevention in Emirates (COPE): a conceptual framework for pilot intervention
Tewfik, I., Mackenzie, J., Cunliffe, A., Al-Dhaheri, A., Ali, H., Washi, S. and Platat, C. 2009. Childhood obesity prevention in Emirates (COPE): a conceptual framework for pilot intervention. in: Ahmed, A. (ed.) World sustainable development outlook: the impact of the global financial crisis on the environment, energy and sustainable development 2009 London World Association for Sustainable Development (WASD).

Nutritional quality of deep fried street-vended foods: a public health concern
Tewfik, I., Ismail, H. and Tewfik, S. 2009. Nutritional quality of deep fried street-vended foods: a public health concern. in: Ahmed, A. (ed.) World sustainable development outlook: the impact of the global financial crisis on the environment, energy and sustainable development 2009 London World Association for Sustainable Development (WASD).

Hepatic oxidative stress and apoptosis following acute alcohol
Everitt, H.E., Tewfik, I., Preedy, V.R. and Patel, V. 2009. Hepatic oxidative stress and apoptosis following acute alcohol. Alcohol & Alcoholism. 44, p. p85.

Assessment of shelf-life of irradiated frozen chicken
Alnasser, M.A., Park, S.F., Jenesson, P. and Tewfik, I. 2009. Assessment of shelf-life of irradiated frozen chicken. International Journal of Food Safety, Nutrition and Public Health. 2 (1), pp. 48-58. https://doi.org/10.1504/IJFSNPH.2009.026918

Would it still be possible to identify irradiated lipid-containing foods towards the end of their shelf-life?
Tewfik, I. and Tewfik, S. 2008. Would it still be possible to identify irradiated lipid-containing foods towards the end of their shelf-life? Food Science and Technology International. 14 (6), pp. 519-524. https://doi.org/10.1177/1082013208100465

Extraction and identification of cyclobutanones from irradiated cheese employing a rapid direct solvent extraction method
Tewfik, I. 2008. Extraction and identification of cyclobutanones from irradiated cheese employing a rapid direct solvent extraction method. International Journal of Food Sciences and Nutrition. 59 (7 & 8), pp. 590-598. https://doi.org/10.1080/09637480701515450

Inter-laboratory trial to validate the direct solvent extraction method for the identification of 2-dodecylcyclobutanone in irradiated chicken and whole liquid egg
Tewfik, I. 2008. Inter-laboratory trial to validate the direct solvent extraction method for the identification of 2-dodecylcyclobutanone in irradiated chicken and whole liquid egg. Food Science and Technology International. 14 (3), pp. 277-283. https://doi.org/10.1177/1082013208095689

Does prolonged breastfeeding reduce the risk for childhood leukemia and lymphomas?
Bener, A., Hoffmann, G.F., Afify, Z., Rasul, K., Mian, M., Guiter, G. and Tewfik, I. 2008. Does prolonged breastfeeding reduce the risk for childhood leukemia and lymphomas? Minerva Pediatrica. 60 (2), pp. 155-161.

Research Student Supervision: Developing Reflective Practice in Higher Education
Tewfik, I. 2008. Research Student Supervision: Developing Reflective Practice in Higher Education. in: World Sustainable Development Outlook 2008: Managing Science and Technology for a Sustainable Future Routledge. pp. 85-92

Can maternal leptin level at early gestation be used as a predictor of postpartum weight retention?
Adegboye, A.R. 2008. Can maternal leptin level at early gestation be used as a predictor of postpartum weight retention? The Indian Council of Medical Research (ICMR).

Accuracy and correlates of maternal recall of birthweight and gestational age
Adegboye, A.R. and Heitmann, B.L. 2008. Accuracy and correlates of maternal recall of birthweight and gestational age. BJOG: An International Journal of Obstetrics and Gynaecology. 115 (7), pp. 886-893. https://doi.org/10.1111/j.1471-0528.2008.01717.x

Assessment of weight changes during and after pregnancy: practical approaches
Adegboye, A.R., Linné, Y., Lourenço, P.M. and Kac, G. 2008. Assessment of weight changes during and after pregnancy: practical approaches. Maternal & Child Nutrition. 4 (1), pp. 1-13. https://doi.org/10.1111/j.1740-8709.2007.00093.x

Nutraceuticals, functional foods and botanical dietary supplements; promote wellbeing and underpin public health
Tewfik, S. and Tewfik, I. 2008. Nutraceuticals, functional foods and botanical dietary supplements; promote wellbeing and underpin public health. World Review of Science, Technology and Sustainable Development. 5 (2), pp. 104-123. https://doi.org/10.1504/WRSTSD.2008.018552

Childhood obesity prevention (CHOP) programme: a conceptual framework for nutrition intervention
Tewfik, I. 2008. Childhood obesity prevention (CHOP) programme: a conceptual framework for nutrition intervention. International Journal of Food Safety, Nutrition and Public Health. 1 (1), pp. 16-32. https://doi.org/10.1504/IJFSNPH.2008.018853

Metabolic Syndrome and its components among Qatari population
Musallam, M., Bener, A., Zirie, M., Al-Gaud, Y.K., Al-Hamaq, A.A., Othman, M.A. and Tewfik, I. 2008. Metabolic Syndrome and its components among Qatari population. International Journal of Food Safety, Nutrition and Public Health. 1 (1), pp. 88-102. https://doi.org/10.1504/IJFSNPH.2008.018858

Impact of lifestyle and dietary habits on hypovitaminosis D in type 1 diabetes mellitus and healthy children from Qatar, a sun-rich country
Bener, A., Alsaied, A., Al-Ali, M., Hassan, A.S., Basha, B., Al-Kubaisi, A., Abraham, A., Mian, M., Guiter, G., Tewfik, I. and Agha, M. 2008. Impact of lifestyle and dietary habits on hypovitaminosis D in type 1 diabetes mellitus and healthy children from Qatar, a sun-rich country. Annals of Nutrition and Metabolism. 53 (3-4), pp. 215-222. https://doi.org/10.1159/000184439

A rapid direct solvent extraction (DSE) method for the extraction of cyclobutanones from irradiated chicken and liquid whole egg
Tewfik, I. 2008. A rapid direct solvent extraction (DSE) method for the extraction of cyclobutanones from irradiated chicken and liquid whole egg. International Journal of Food Science and Technology. 43 (1), pp. 108-113. https://doi.org/10.1111/j.1365-2621.2006.01399.x

Nutrition and alcoholic liver disease
Everitt, H.E., Patel, V. and Tewfik, I. 2007. Nutrition and alcoholic liver disease. Nutrition Bulletin. 32 (2), pp. 138-144. https://doi.org/10.1111/j.1467-3010.2007.00627.x

Nutrition and alcoholic liver disease
Everitt, H, Patel, V.B and Tewfik, I. 2007. Nutrition and alcoholic liver disease. Nutrition Bulletin. 32 (2), pp. 138 - 144. https://doi.org/10.1111/j.1467-3010.2007.00627.xopen_in_newISSN

Research Supervision: Training, process and experience
Tewfik, I. 2007. Research Supervision: Training, process and experience. in: World Sustainable Development Outlook 2007: Knowledge Management and Sustainable Development in the 21st Century Routledge.

Plasma 5-HT And Fatigue During Endurance Cycle Exercise: Effects Of Exercise Intensity And Duration
Vleck, Veronica E, Asensio, Karine, Tewfik, Ihab, Webb, Heather, McNaughton, Lars, Lowry, Christopher and Bentley, David J 2007. Plasma 5-HT And Fatigue During Endurance Cycle Exercise: Effects Of Exercise Intensity And Duration. Medicine & Science in Sports & Exercise. 39 (5). https://doi.org/10.1249/01.mss.0000274050.00286.a9

Losing weight after pregnancy: diet plus exercise better than diet alone
Adegboye, A.R. 2007. Losing weight after pregnancy: diet plus exercise better than diet alone. The Cochrane Library.

Does weight gain during pregnancy predict future weight?
Adegboye, A.R. 2007. Does weight gain during pregnancy predict future weight? Frost & Sullivan.

The use and interpretation of anthropometric indicators of nutritonal status during preganancy
Adegboye, A.R., Kac, G. and Lacerda, E. 2007. The use and interpretation of anthropometric indicators of nutritonal status during preganancy. in: Kac, G., Sichieri, R. and Gigante, D.P. (ed.) Epidemiologia nutricional (Portuguese Edition of 'Nutritional Epidemiology') Ministry of Health, Brazil SciELO Editora FIOCRUZ.

Does excess pregnancy weight gain constitute a major risk for increasing long-term BMI?
Adegboye, A.R., Rössner, S., Neovius, M., Lourenço, P.M. and Linné, Y. 2007. Does excess pregnancy weight gain constitute a major risk for increasing long-term BMI? Obesity. 15 (5), pp. 1278-1286. https://doi.org/10.1038/oby.2007.149

The public health advocate: food irradiation's offer to food security
Tewfik, I. and Tewfik, S. 2007. The public health advocate: food irradiation's offer to food security. in: Ahmed, A. (ed.) Science, technology and sustainability in the Middle East and North Africa Genève InderScience. pp. 197-209

Competitive food safety program: the case of Qatar
Al-Hamaq, A.A., Zeyadah, S.S., Ahmed, A., Amuna, P. and Tewfik, I. 2007. Competitive food safety program: the case of Qatar. in: Ahmed, A. (ed.) Science, technology and sustainability in the Middle East and North Africa Genève InderScience. pp. 210-228

Book review: B. Freire Wilma (editor). Nutrition and an Active Life: From Knowledge to Action. Scientific and Technical Publication No. 612. Washington DC: Pan American Health Organization 2005. US$ 36·00 (paperback) pp. 260. ISBN: 92 75 11612 1
Tewfik, I. 2006. Book review: B. Freire Wilma (editor). Nutrition and an Active Life: From Knowledge to Action. Scientific and Technical Publication No. 612. Washington DC: Pan American Health Organization 2005. US$ 36·00 (paperback) pp. 260. ISBN: 92 75 11612 1. British Journal of Nutrition. 96 (4), p. 793. https://doi.org/10.1079/BJN20061844

Prevalence of overweight, obesity, and associated psychological problems in Qatari's female population
Bener, A. and Tewfik, I. 2006. Prevalence of overweight, obesity, and associated psychological problems in Qatari's female population. Obesity Reviews. 7 (2), pp. 139-145. https://doi.org/10.1111/j.1467-789X.2006.00209.x

Prevalence of overweight, obesity, and associated psychological problems in Qatari's female population
Bener, A. and Tewfik, I. 2006. Prevalence of overweight, obesity, and associated psychological problems in Qatari's female population. Obesity Reviews. 7 (2), pp. 139-145. https://doi.org/10.1111/j.1467-789X.2006.00209.x

Gestational weight gain differentials in the presence of intimate partner violence
Adegboye, A.R., Moraes, C.L. and Reichenheim, M.E. 2006. Gestational weight gain differentials in the presence of intimate partner violence. International Journal of Gynecology & Obstetrics. 95 (3), p. 254–260. https://doi.org/10.1016/j.ijgo.2006.08.015

Industrial and dietetic applications of the food multimix (FMM) concept in meeting the nutritional needs of vulnerable groups in South Africa
Zotor, F., Amuna, P., Oldewage-Theron, W.H., Adewuya, T., Prinsloo, G., Chinyanga, Y., Tewfik, I. and Amuna, N. 2006. Industrial and dietetic applications of the food multimix (FMM) concept in meeting the nutritional needs of vulnerable groups in South Africa. Academic Journal of Vaal University of Technology. 3, pp. 54-67.

CO2 photoassimilation, chlorophyll fluorescence, lipid peroxidation and yield in cotton (Gossypium hirsutum L. cv Giza 65) in response to O3
Hassan, I.A. and Tewfik, I. 2006. CO2 photoassimilation, chlorophyll fluorescence, lipid peroxidation and yield in cotton (Gossypium hirsutum L. cv Giza 65) in response to O3. World Review of Science, Technology and Sustainable Development. 3 (1), pp. 70-79. https://doi.org/10.1504/WRSTSD.2006.008764

Prevalence of dieting, overweight, body image satisfaction and associated psychological problems in adolescent boys
Bener, A., Kamal, A., Tewfik, I. and Sabuncuoglu, O. 2006. Prevalence of dieting, overweight, body image satisfaction and associated psychological problems in adolescent boys. Nutrition & Food Science. 36 (5), pp. 295-304. https://doi.org/10.1108/00346650610703144

Health habits and risk of obesity among 6–13 year old school children and adolescents
Al-Shammari, H., Bumejjdad, A., Amuna, P. and Tewfik, I. 2005. Health habits and risk of obesity among 6–13 year old school children and adolescents. in: Nutrition and health - Current Topics IV Garant. pp. 207–208

Would food irradiation as a means of technology transfer assist food productivity and security in Africa and sustain its development?
Tewfik, I., Amuna, P. and Zotor, F. 2004. Would food irradiation as a means of technology transfer assist food productivity and security in Africa and sustain its development? International Journal of Technology Policy and Management. 4 (1), pp. 44-52.

Human and economic development in developing countries: a public health dimension employing the food multimix concept
Amuna, P., Zotor, F. and Tewfik, I. 2004. Human and economic development in developing countries: a public health dimension employing the food multimix concept. World Review of Science, Technology and Sustainable Development. 1 (2), pp. 129-137.

The effect of intermittent heating on some chemical parameters of refined oils used in Egypt. A public health nutrition concern
Tewfik, I., Ismail, H. and Sumar, S. 1998. The effect of intermittent heating on some chemical parameters of refined oils used in Egypt. A public health nutrition concern. International Journal of Food Sciences and Nutrition. 49 (5), pp. 339-342. https://doi.org/10.3109/09637489809089408

A rapid supercritical fluid extraction method for the detection of 2-alkylcyclobutanones in gamma irradiated beef and chicken
Tewfik, I., Ismail, H. and Sumar, S. 1998. A rapid supercritical fluid extraction method for the detection of 2-alkylcyclobutanones in gamma irradiated beef and chicken. Lebensmittel-Wissenschaft und-Technologie = Journal of Food Sciences and Technology. 31 (4), pp. 366-370. https://doi.org/10.1006/fstl.1998.0371

A rapid direct solvent extraction method (DSE-GC-MS) used to detect irradiated minced beef
Tewfik, I., Ismail, H. and Sumar, S. 1998. A rapid direct solvent extraction method (DSE-GC-MS) used to detect irradiated minced beef. Bulletin of High Institute of Public Health. 28 (3), pp. 85-92.

A rapid supercritical fluid extraction method for the qualitative detection of 2-alkylcyclobutanones in gamma-irradiated fresh and sea water fish
Tewfik, I. 1998. A rapid supercritical fluid extraction method for the qualitative detection of 2-alkylcyclobutanones in gamma-irradiated fresh and sea water fish. International Journal of Food Sciences and Nutrition. 50 (1), pp. 51-56. https://doi.org/10.1080/096374899101418

A rapid method (SFE-GC-MS) used to detect irradiated minced beef
Tewfik, I., Ismail, H., Amine, E. and Rady, A. 1996. A rapid method (SFE-GC-MS) used to detect irradiated minced beef. Arab Journal of Nuclear Sciences and Applications. 29 (4), pp. 345-353.

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