It is estimated that 50% of the global population may be infected with H. pylori
; however, only 20% of infected people experience symptoms. New evidence suggests that patients treated for the infection developed significant weight gain compared to subjects with untreated H. pylori
By reviewing data taken from forty-nine studies with data from ten European countries, Japan, the U.S. and Australia, Professor Gerald Holtmann identified a correlation between prevalence rates for H. pylori
"The rate of obesity and overweight were inversely and significantly correlated with the prevalence of H. pylori
infection," said Professor Holtmann. "The gradual decrease of the H. pylori
colonization observed in recent decades could be causally related to the obesity endemic observed in the Western world".