Adherence to a Fish-Rich Dietary Pattern Is Associated with Chronic Hepatitis C Patients Showing Low Viral Load: Implications for Nutritional Management

Hepatitis C virus (HCV) infection is influenced by genetic (e.g., polymorphisms) and environmental factors between the virus and the host. HCV modulates the host's lipid metabolism but dietary components influence lipids and in vitro HCV RNA replication. Few data exist on the role of dietary features or patterns (DPs) in HCV infection. Herein, we aimed to evaluate the nutritional profiles of chronic HCV (CHC) and spontaneous clearance (SC) Mexican patients in the context of alleles and their correlation with HCV-related variables. The fibrosis-related allele prevailed in CHC and SC patients, who had four DPs ("meat and soft drinks", DP1; "processed animal and fried foods", DP2; "Mexican-healthy", DP3; and "fish-rich", DP4). In CHC subjects, polyunsaturated fatty acid intake (PUFA ≥ 4.9%) was negatively associated, and fiber intake (≥21.5 g/day) was positively associated with a high viral load ( < 0.036). High adherence to fish-rich DP4 was associated with a higher frequency of CHC individuals consuming PUFA ≥ 4.9% ( = 0.004) and low viral load ( = 0.036), but a lower frequency of CHC individuals consuming fiber ≥21.5 g/day ( = 0.038). In SC and CHC individuals, modifying unhealthy DPs and targeting HCV-interacting nutrients, respectively, could be part of a nutritional management strategy to prevent further liver damage.