The risky body mass index ranges for significant hepatitis B viral load: A campus-based study

Significant hepatitis B viral load (?10,000 copies/mL) was established to increase risk of advanced liver diseases. The aim of this study was to explore the metabolic risk factors for significant hepatitis B viral load. A campus-based cohort consisting of 146 participants of chronic hepatitis B virus (HBV) infection in Northern Taiwan was investigated in 2009. Clinical profiles including serum levels of deoxyribonucleic acid of hepatitis B virus (HBV DNA) were collected. Hepatitis B e antigen (HBeAg) serostatus, high alanine aminotransferase level, body mass index (BMI) ranges, and insulin resistance were related to significant HBV DNA levels in univariate analysis. Compared to individuals with BMI 23-24.9 kg/m 2 in multivariate analysis, those with BMI ?25 kg/m 2 (OR = 3.86, 95% CI = 1.38-10.8, P = 0.010) and those with BMI <23 kg/m 2 (OR = 4.47, 95% CI = 1.32-15.2, P = 0.016) were at higher risk for significant HBV DNA levels. This phenomenon was also manifest in HBeAg seronegatives, who contributed to a majority of significant viral load in our study. Furthermore, insulin resistance and BMI ?25 kg/m 2 had positive additive effects on significant HBV DNA levels (adjusted OR = 9.34, 95% CI = 1.74-50.3, P = 0.009). In conclusion, having certain BMI ranges (BMI ?25 kg/m 2 or BMI <23 kg/m 2) could be a risk factor of significant HBV DNA levels. ? 2011 Published by Elsevier Ltd.