title: Prevalence of type 2 diabetes in the Arab world: impact of GDP and energy consumption.
abstract: Diabetes Mellitus (DM) is a rapidly growing and most challenging health issue of the 21st century. This study aimed to investigate the prevalence of type-2 DM and its association with Gross Domestic Product (GDP) and energy consumption in the Arab world countries.
  
  
  
  We identified 88 articles through systematic searches including Institute of Scientific Information (ISI) Web of Science, PubMed and EMBASE databases published between 1980-2015. The related literature was searched by using the keywords including diabetes mellitus, prevalence, incidence, epidemiology of type-2 diabetes mellitus (T2DM), and names of the individual Arab world countries. The articles were selected and investigated for the prevalence of T2DM. No limitations were imposed in the design of the study or publication language. Finally, 50 peer-reviewed publications were included and the rest were excluded.
  
  
  
  Arab world countries with the highest prevalence of T2DM are: Kingdom of Saudi Arabia 31.6%, Oman 29%, Kuwait 25.4%, Bahrain 25.0% and United Arab Emirates 25.0%. The lowest prevalence was found in Mauritania (4.7%) and Somalia (3.9%). The highest prevalence was observed in Gulf Cooperation Council (GCC) countries (25.45%) whilst non-GCC countries had the lowest prevalence (12.69%). The combined mean prevalence of T2DM in both GCC and Non-GCC Arab countries was 16.17%. The prevalence of T2DM was found to be significantly associated with higher Gross Domestic Product (GDP) (p=0.020) and energy consumption (p=0.017).
  
  
  
  In the Arab world, the countries with the highest prevalence of type 2 diabetes mellitus are: Saudi Arabia, Oman, Kuwait, Bahrain and UAE, whilst the countries with the lowest prevalence are Mauritania and Somalia. This prevalence was significantly associated with high GDP per capita and energy consumption. Arab states must incorporate diabetes preventive policies on a war-footing basis to minimize the burden of the disease.
authors.affiliation: Department of Physiology, College of Medicine, King Saud University, Riyadh, Saudi Arabia. sultanmeo@hotmail.com.
authors.forename: S A
authors.initials: SA
authors.lastname: Meo
authors.forename: A M
authors.initials: AM
authors.lastname: Usmani
authors.forename: E
authors.initials: E
authors.lastname: Qalbani
mesh_terms: D018643:Arab World; D003924:Diabetes Mellitus, Type 2 / Q000453:epidemiology*; D004736:Energy-Generating Resources; D059066:Gross Domestic Product; D006801:Humans; D008877:Middle East / Q000453:epidemiology; D015995:Prevalence