Helicobacter pylori infection is linked to metabolic dysfunction and associated steatotic liver disease: A large...

Helicobacter pylori (H. pylori), a globally widespread pathogen affecting half of the global population, has been increasingly implicated in metabolic disorders, including obesity, dyslipidemia, and metabolic dysfunction-associated steatotic liver disease (MASLD). MASLD is a common condition, impacting nearly one in four adults globally. It also shares significant pathophysiological links with metabolic syndrome. Despite the fact that mechanistic hypotheses (such as oxidative stress and inflammation) have been proposed to explain these relationships, large-scale studies comprehensively assessing multifactorial metabolic associations are lacking. We proposed that H. pylori infection may independently correlate with unfavorable metabolic profiles and the presence of MASLD among adults in a large cohort.

To investigate the associations of H. pylori infection with obesity, glucose, lipids, blood pressure, and MASLD in Chinese adults.

This study included 28624 adults recruited from the Physical Examination Center at Nanchang University's Second Affiliated Hospital. The 13C-urea breath test was used to identify H. pylori infection, while abdominal ultrasound was employed for MASLD diagnosis. The relationships between H. pylori infection and metabolic factors were analyzed via multivariate logistic regression.

The overall H. pylori infection incidence was 26.8%, with higher rates observed in older adults (≥ 70 years: 26.1% vs 18-29 years: 24.6%, P < 0.001) and obese individuals [body mass index (BMI) ≥ 28 kg/m²: 30.0% vs normal BMI: 25.3%, P < 0.001]. H. pylori-positive individuals exhibited elevated blood glucose (5.43 ± 1.55 mmol/L vs 5.27 ± 1.23 mmol/L, P < 0.001), low-density lipoprotein cholesterol (2.97 ± 0.76 mmol/L vs 2.94 ± 0.75 mmol/L, P < 0.001), and blood pressure (systolic: 123.49 ± 19.06 mmHg vs 122.85 ± 18.33 mmHg, P = 0.009; diastolic: 75.48 ± 12.37 vs 74.9 mmHg ± 11.9 mmHg, P < 0.001) levels. Among MASLD patients, infection was associated with increased glucose (5.82 ± 1.95 mmol/L vs 5.60 ± 1.60 mmol/L, P < 0.001), total cholesterol (5.05 ± 1.03 mmol/L vs 5.00 ± 1.00 mmol/L, P = 0.039), BMI (26.23 ± 3.00 kg/m² vs 26.04 ± 2.96 kg/m², P = 0.004), and blood pressure (systolic: 129.5 ± 20.00 mmHg vs 128.49 ± 17.62 mmHg, P = 0.009; diastolic: 79.87 ± 12.07 mmHg vs 79.04 ± 11.76 mmHg, P = 0.002) levels. Multivariate analysis demonstrated elevated glucose [odds ratio (OR) = 1.079, P < 0.001], BMI (OR = 1.016, P = 0.002), and diastolic pressure (OR = 1.003, P = 0.048) levels as independent risk factors, with high-density lipoprotein (HDL) being observed as a protective factor (OR = 0.837, P < 0.001).

H. pylori infection correlates with older age, obesity, elevated glucose levels, and elevated diastolic blood pressure, whereas HDL protects against H. pylori infection, thus underscoring its role in metabolic disturbances and MASLD.