Published online Apr 15, 2016. doi: 10.4251/wjgo.v8.i4.341
Peer-review started: September 16, 2015
First decision: October 21, 2015
Revised: November 23, 2015
Accepted: January 21, 2016
Article in press: January 22, 2016
Published online: April 15, 2016
Core tip: Despite the established etiological role of Helicobacter pylori (H. pylori), its actual distribution and association with related diseases is controversial, especially among Asian countries, a phenomenon termed as Asian enigma. This is judged by genetic variability of the infecting H. pylori strains, diversity in the host genetic background, and environmental factors such as diet. Amongst these, the dietary factor was not given much attention. In this review, dietary components are focused in detail with respect to H. pylori-associated enigma with a specific emphasis and comparison of dietary ingredients between Asian countries in order to critically evaluate its role in Asian enigma.