Omar A. Alhaj

1.4k total citations · 1 hit paper
57 papers, 874 citations indexed

About

Omar A. Alhaj is a scholar working on Food Science, Clinical Psychology and Public Health, Environmental and Occupational Health. According to data from OpenAlex, Omar A. Alhaj has authored 57 papers receiving a total of 874 indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Food Science, 13 papers in Clinical Psychology and 11 papers in Public Health, Environmental and Occupational Health. Recurrent topics in Omar A. Alhaj's work include Animal Diversity and Health Studies (15 papers), Eating Disorders and Behaviors (9 papers) and Obesity, Physical Activity, Diet (8 papers). Omar A. Alhaj is often cited by papers focused on Animal Diversity and Health Studies (15 papers), Eating Disorders and Behaviors (9 papers) and Obesity, Physical Activity, Diet (8 papers). Omar A. Alhaj collaborates with scholars based in Jordan, Bahrain and Saudi Arabia. Omar A. Alhaj's co-authors include Haitham Jahrami, Nicola Luigi Bragazzi, Zahra Saif, Maha Al‐Rasheed, Ahmed S. BaHammam, Feten Fekih‐Romdhane, Michael V. Vitiello, Seithikurippu R. Pandi‐Perumal, Ahmad F. Alenezi and Ara Kanekanian and has published in prestigious journals such as SHILAP Revista de lepidopterología, Food Chemistry and Nutrients.

In The Last Decade

Omar A. Alhaj

51 papers receiving 861 citations

Hit Papers

align trajectories sort by overperformance

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Sleep disturbances during the COVID-19 pandemic: A systematic review, meta-analysis, and meta-regression

2022 204 citations Haitham Jahrami, Omar A. Alhaj et al. Sleep Medicine Reviews profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Omar A. Alhaj Jordan	17	261	224	189	132	110	57	874
Noha H. Farag United States	22	286 1.1×	124 0.6×	107 0.6×	45 0.3×	29 0.3×	51	1.4k
Robin M. Tucker United States	21	274 1.0×	216 1.0×	180 1.0×	43 0.3×	31 0.3×	71	1.2k
Katri Peuhkuri Finland	18	274 1.0×	61 0.3×	325 1.7×	108 0.8×	42 0.4×	25	1.2k
Mona Hashim United Arab Emirates	18	355 1.4×	93 0.4×	36 0.2×	54 0.4×	50 0.5×	56	1.1k
Rachel F.L. Walsh United States	10	425 1.6×	62 0.3×	63 0.3×	413 3.1×	67 0.6×	25	1.1k
Monique Malmberg Netherlands	10	275 1.1×	43 0.2×	117 0.6×	43 0.3×	107 1.0×	11	687
Joe Alcock United States	18	70 0.3×	94 0.4×	68 0.4×	335 2.5×	108 1.0×	46	1.2k
Ana E. Sheehan United States	9	429 1.6×	63 0.3×	54 0.3×	416 3.2×	65 0.6×	21	1.0k
Megan N. Parker United States	14	205 0.8×	187 0.8×	101 0.5×	36 0.3×	43 0.4×	41	809
Elena Urdaneta Spain	20	108 0.4×	219 1.0×	53 0.3×	169 1.3×	26 0.2×	66	1.3k

Countries citing papers authored by Omar A. Alhaj

Since Specialization

Citations

This map shows the geographic impact of Omar A. Alhaj's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Omar A. Alhaj with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Omar A. Alhaj more than expected).

Fields of papers citing papers by Omar A. Alhaj

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Omar A. Alhaj. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Omar A. Alhaj. The network helps show where Omar A. Alhaj may publish in the future.

Co-authorship network of co-authors of Omar A. Alhaj

This figure shows the co-authorship network connecting the top 25 collaborators of Omar A. Alhaj. A scholar is included among the top collaborators of Omar A. Alhaj based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Omar A. Alhaj. Omar A. Alhaj is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Elsahoryi, Nour Amin, et al.. (2025). Unveiling night eating syndrome: how it connects to mental health, insomnia, and quality of life in university students—a cross-sectional study. Journal of Eating Disorders. 13(1). 225–225.

Elsahoryi, Nour Amin, et al.. (2025). A School-Based Five-Month Gardening Intervention Improves Vegetable Intake, BMI, and Nutrition Knowledge in Primary School Children: A Controlled Quasi-Experimental Trial. Nutrients. 17(19). 3133–3133.

Alhaj, Omar A., et al.. (2024). Severe Hyponatremia Associated With Terlipressin Use in Esophageal Variceal Bleeding. Cureus. 16(7). e64576–e64576.

Ghazzawi, Hadeel, Omar A. Alhaj, Seithikurippu R. Pandi‐Perumal, et al.. (2024). A systematic review, meta-analysis, and meta-regression of the prevalence of self-reported disordered eating and associated factors among athletes worldwide. Journal of Eating Disorders. 12(1). 24–24. 17 indexed citations

Ghazzawi, Hadeel, et al.. (2023). Menstrual cycle symptoms are associated with nutrient intake: Results from network analysis from an online survey. Women s Health. 19. 902596312–902596312. 3 indexed citations

Alhaj, Omar A., Khaled Trabelsi, Nitin Shivappa, et al.. (2023). Diet-related inflammation increases the odds of multiple sclerosis: Results from a large population-based prevalent case-control study in Jordan. Frontiers in Nutrition. 10. 1098883–1098883. 4 indexed citations

Ghazzawi, Hadeel, et al.. (2022). The Prevalence of “at Risk” Eating Disorders among Athletes in Jordan. Sports. 10(11). 182–182. 8 indexed citations

Helmy, Mai, Ahmad F. Alenezi, Farzana Ashraf, et al.. (2022). Cultural adaptation and validation of the Arabic version of the multidimensional cognitive attentional syndrome scale (MCASS). Cognitive Neuropsychiatry. 28(1). 1–18. 1 indexed citations

Alhaj, Omar A., Ahmad F. Alenezi, Maha Al‐Rasheed, et al.. (2022). Camel milk composition by breed, season, publication year, and country: A global systematic review, meta‐analysis, and meta‐regression. Comprehensive Reviews in Food Science and Food Safety. 21(3). 2520–2559. 27 indexed citations

10.

Trabelsi, Khaled, Achraf Ammar, Luca Puce, et al.. (2022). Religious fasting and its impacts on individual, public, and planetary health: Fasting as a “religious health asset” for a healthier, more equitable, and sustainable society. Frontiers in Nutrition. 9. 1036496–1036496. 24 indexed citations

11.

Jahrami, Haitham, Omar A. Alhaj, Ahmad F. Alenezi, et al.. (2022). Sleep disturbances during the COVID-19 pandemic: A systematic review, meta-analysis, and meta-regression. Sleep Medicine Reviews. 62. 101591–101591. 204 indexed citations breakdown →

12.

Al‐Rasheed, Maha, Sinaa Al-Aqeel, Fowad Khurshid, et al.. (2022). The Prevalence of Psychological Distress and Its Relationship to Sleep Quality in Saudi Arabia's General Population During the COVID-19 Pandemic. Frontiers in Psychiatry. 12. 809040–809040. 7 indexed citations

13.

Jahrami, Haitham, Feten Fekih‐Romdhane, Zahra Saif, et al.. (2022). Sleep dissatisfaction is a potential marker for nomophobia in adults. Sleep Medicine. 98. 152–157. 16 indexed citations

14.

Jahrami, Haitham, Omar A. Alhaj, Mohamed Buheji, et al.. (2021). The Association between Symptoms of Nomophobia, Insomnia and Food Addiction among Young Adults: Findings of an Exploratory Cross-Sectional Survey. International Journal of Environmental Research and Public Health. 18(2). 711–711. 32 indexed citations

15.

Alhaj, Omar A., et al.. (2021). Arab Women Adherence to the Mediterranean Diet and Insomnia. Medicina. 58(1). 17–17. 13 indexed citations

16.

Mohamed, Abdellatif A., Shahzad Hussain, Mohamed A. Ibraheem, et al.. (2019). Rheological and Structural Properties of Camel Milk/Sweet Potato Starch Gel. Journal of Chemistry. 2019. 1–12. 8 indexed citations

17.

Lin, Mengshi, et al.. (2016). Discrimination Between Bacillus and Alicyclobacillus Isolates in Apple Juice by Fourier Transform Infrared Spectroscopy and Multivariate Analysis. 3(1). 1 indexed citations

18.

Alhaj, Omar A., et al.. (2012). Chemical characterisation of oligosaccharides in commercially pasteurised dromedary camel (Camelus dromedarius) milk. International Dairy Journal. 28(2). 70–75. 31 indexed citations

19.

Alhaj, Omar A., Ali Metwalli, & Elsayed A. Ismail. (2011). HEAT STABILITY OF CAMEL MILK PROTEINS AFTER STERILISATION PROCESS. Journal of Camel Practice and Research. 18(2). 277–282. 17 indexed citations

20.

Alhaj, Omar A., Ara Kanekanian, & Adrian Peters. (2007). Investigation on whey proteins profile of commercially available milk‐based probiotics health drinks using fast protein liquid chromatography (FPLC). British Food Journal. 109(6). 469–480. 4 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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