1. Respiratory Tract Infections (RTIs): Common Cold: Several studies suggest that zinc lozenges or supplements, when taken within 24-48 hours of symptom onset, may reduce the duration and severity of the common cold. Zinc may interfere with the rhinovirus's ability to multiply and attach to nasal passages. Pneumonia: Zinc deficiency is associated with an increased risk of pneumonia, especially in children. Some studies, particularly in developing countries, have shown that zinc supplementation may reduce the incidence and severity of pneumonia in children. However, results have been mixed, and more research is needed. Bronchiolitis: Contradictory evidence exists regarding zinc's role in bronchiolitis. Some studies found no benefit of zinc supplementation in improving the clinical manifestations of acute bronchiolitis in young children. COVID-19: Research on zinc's role in COVID-19 is ongoing and has yielded inconsistent results. Some studies suggest that zinc deficiency ...