Guides Cite Sleep, Ventilation, and Zinc for Cold and Flu Defense

Experts recommend frequent handwashing, avoiding close contact with sick people, improving ventilation, and using masks when distancing is not possible to reduce the risk of colds and flu. Annual flu vaccination and an up-to-date COVID-19 vaccine help protect against severe illness. Seasonal-wellness features also emphasize sufficient sleep, regular moderate aerobic exercise, a varied diet, and adequate hydration; one cites research linking fewer than six hours of sleep with a substantially higher risk of catching a cold, while cautioning against extreme exertion. Vitamin D may modestly reduce respiratory infections, particularly for people who are deficient, while evidence for many immune boosters is limited; zinc lozenges may offer some benefit if started early, and supplements such as oregano oil can cause side effects or interact with medications. One sponsored feature highlights grapes as part of an immune-supportive diet. People with fever, body aches, or a chest cough are advised to rest, return to exercise gradually, and seek personalized medical guidance when needed.