Global obesity research trends during 1999 to 2017: A bibliometric analysis

The interest in obesity has considerably increased in the scientific community in the last 2 decades. We present a bibliometric analysis to find out the future research hotspot and trends of obesity.

Data were based on the Science Citation Index Expanded (SCI-E), from the Institute of Scientific Information Web of Science database and the 5-year impact factor of a journal were issued from the Journal Citation Reports (JCR) in 2017. Articles referring to obesity during 1999 to 2017 were concentrated on the analysis by scientific output characters and the frequency of author keywords used.

Globally, 50,246 articles meet the inclusion criteria during 1999 to 2017. The cumulative number of publication about obesity followed exponential distribution (R = 0.9974) from 2008. USA was the most productive countries in both independent and international collaborative papers, the countries/regions with the highest average Times Cited scores for independent articles was France and The United Kingdom scored the highest in average Times Cited for international collaborative papers. Collaboration among countries, playing an ever-growing role in contemporary scientific research. The 2 most prolific journals are Obesity Surgery and International Journal of Obesity, responsible for 3.95% of the publication.

Obesity has been a field of intense research in the last 19 years. By reasonably analyzing the author keywords and the distribution of journals, "bariatric surgery" (especially "sleeve gastrectomy") and "obese complications" (especially "diabetes mellitus," "metabolic syndrome," "depression," and "polycystic ovary syndrome") will undoubtedly maintain the hotspots of obesity research in the next few decades.