Association between Helicobacter pylori antibody-positive status and extragastric diseases in Japanese junior high school students

Yuriko Abe, Chika Kusano, Chika Takano, Ichiro Morioka, Takuji Gotoda

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Background: Helicobacter pylori (H. pylori) infection causes various extragastric diseases. Its transmission route has still not been clarified. However, no large-scale studies have examined the extragastric diseases caused by H. pylori in adolescents. This study aimed to examine the association of H. pylori infection with anemia, serum cholesterol levels, physique, and birth delivery method (vaginal or cesarean) in a large number of Japanese adolescents. Methods: From 2016 to 2018, we screened 2,399 adolescents (aged 13–15 years) in their second and third years of junior high school using an enzyme-linked immunosorbent assay-based antibody test. Red blood cells, hemoglobin, hematocrit, total cholesterol, high-density lipoprotein (HDL) cholesterol, and serum antibody levels were measured. Results: Hemoglobin and hematocrit levels were significantly lower in the H. pylori antibody-positive group than in the H. pylori antibody-negative group in both sexes (boys: P = 0.0004 and 0.0022; girls: P = 0.0019 and 0.0005, respectively). Total cholesterol and non-HDL cholesterol levels were significantly higher in the H. pylori-positive group than in the H. pylori-negative group among boys (P = 0.0370 and 0.0293 respectively). There was no significant difference in body mass index percentile and birth delivery method between the H. pylori-positive and H. pylori-negative groups in both boys and girls. Conclusions: Among Japanese junior high school students, H. pylori antibody-positive status was associated with anemia in both sexes while total cholesterol and non-HDL cholesterol levels were associated among boys. There was no association between H. pylori antibody status, body mass index percentile, and birth-delivery method.

Original languageEnglish
Pages (from-to)1087-1094
Number of pages8
JournalPediatrics International
Issue number9
Publication statusPublished - Sept 2021


  • Helicobacter pylori
  • anemia
  • child
  • obesity
  • total cholesterol


Dive into the research topics of 'Association between Helicobacter pylori antibody-positive status and extragastric diseases in Japanese junior high school students'. Together they form a unique fingerprint.

Cite this