Helicobacter pylori infection: association with dietary habits and socioeconomic conditions

Introduction: Few studies have investigated factors possibly related to the source of Helicobacter pylori infection in humans. Materials and methods: This was a retrospective study including a population of 201 H. pylori positive patients and 259 H. pylori negative subjects observed at a tertiary referral center in Apulia. The H. pylori status was assessed by urea breath test. Data on socio-demographic characteristics and the consumption of different foods and beverages in the last year were collected by a questionnaire. Results: No significant relationship was found between H. pylori infection and gender or age, type of employment, working in direct contact with the public, residence, level of education or exposure to pets. No association between H. pylori status and the consumption of fish, fruits, legumes, honey, spices, meats, milk and milk products including some typical product of our area was found. The same was true for the consumption of several kind of beverage including green tea and wine. Cigarette smoking and living in the same house with H. pylori positive relatives were significantly associated with H. pylori positivity. The intake of uncooked seafood (mussels and other molluscs) as well as some uncooked vegetables such as tomatos,pepper,and chicory,municipal water and the number of cups of coffee consumed per week correlated significantly with H. pylori status. The consumption of raw vegetables purchased from street vendors and the consumption of meals outside home were also associated with H. pylori infection. Conclusions: Foods may represent an important route in the transmission of H. pylori among humans.