Long COVID, the persistent aftermath of SARS-CoV-2 infection, continues to challenge healthcare systems worldwide. Characterized by prolonged symptoms such as fatigue, cognitive impairment, respiratory difficulties, and cardiovascular complications, it affects millions, including individuals with mild initial infections. Recent studies indicate that nearly 10–30% of COVID-19 patients may experience lingering effects months after recovery. Medical researchers are intensifying efforts to understand the underlying mechanisms, ranging from immune dysregulation to viral persistence.