Dietary Stress and Viral Reactivation: How Processed Foods May Weaken Immune Surveillance of Latent Viruses

Abstract

Latent viral infections, such as Epstein-Barr virus (EBV) and
Latent viral infections, such as Epstein-Barr virus (EBV) and
cytomegalovirus (CMV), are typically held in check by robust
immune surveillance mechanisms. This letter proposes the
hypothesis that modern diets rich in processed foods may
represent a significant, overlooked environmental factor that
impairs this immune control, leading to viral reactivation.
Processed foods are characterized by their capacity to induce
chronic low-grade inflammation, gut microbiome dysbiosis, and
metabolic stress. These factors may collectively weaken the
function of critical immune cells, such as cytotoxic T
lymphocytes and natural killer (NK) cells, which are essential for
suppressing latent viral reservoirs. By driving immune
exhaustion and altering homeostatic balance, such dietary
patterns could increase susceptibility to subclinical viral
reactivation, thereby contributing to a cumulative viral burden
and systemic inflammation over time. Investigating this dietvirus
link is crucial and may reveal novel nutritional strategies as
supportive measures for preserving long-term immune control
over persistent infections.
as supportive measures for preserving long-term immune control
over persistent infections.