Table 1.

Correlation between H. pylori colonization and various disease conditions.

Diseases		Association with H. pylori	Reference
Gastrointestinal (GI) diseases	Gastric MALT lymphoma	+ve	Watari et al., 2014
	Gastritis	+ve	Watari et al., 2014
	Duodenal ulcer	+ve	Narayanan et al., 2018
	Gastric ulcer	+ve	Narayanan et al., 2018
	Gastric adenocarcinoma	+ve	Correa and Piazuelo, 2011
	Esophageal cancer	-ve	Polyzos et al., 2018
	Gastro-Esophageal Reflux Disease (GERD)	-ve	Labenz et al., 1997; Fallone et al., 2000
	Barrett’s esophagus	-ve	Rubenstein et al., 2014
Non- gastrointestinal (non-GI) diseases	Iron deficiency anemia	+ve	Ortiz et al., 2014; Sato et al., 2015
	Diabetes mellitus	+ve	Yang et al., 2014; Chen et al., 2015
	Coronary artery diseases	+ve	Yu et al., 2017
	Idiopathic thrombocytopenic purpura	+ve	Franchini and Veneri, 2004; Kikuchi et al., 2011
	Allergy	-ve	Lee et al., 2015
	Asthma	-ve	Zevit et al., 2012; Wang et al., 2013
	Multiple sclerosis	-ve	Li et al., 2007b; Cook et al., 2015
	Coeliac disease	-ve	Diamanti et al., 1999; Ciacci et al., 2000
	Inflammatory bowel diseases (IBD)	-ve	Robinson, 2015