Natural Ways to Support Your Immune System This Cold & Flu Season

Cold and flu season brings a lot of advice — some well-supported, some not. Here’s a cautious look at everyday habits and traditional remedies commonly associated with cold and flu support, along with what we intentionally left out of this rewrite.

Zinc and Cold Duration

Zinc is commonly discussed in connection with cold symptoms — some research suggests zinc lozenges, started within 24 hours of symptom onset, may modestly shorten the duration of a common cold in some people. Food sources of zinc include oysters, meat and poultry, nuts, seeds, and cacao. As with any supplement, more isn’t automatically better — talk to a pharmacist or doctor before starting a new zinc regimen, especially long-term.

Everyday Immune-Support Habits

The basics still matter most during cold and flu season: adequate sleep, staying hydrated, regular handwashing, and a diet with enough fruits and vegetables to support general immune function. These are broadly recommended, low-risk habits rather than guarantees against illness.

Traditional Remedies People Use

Warm drinks made with lemon, ginger, and honey, or elderberry preparations, are traditional remedies many people use to feel more comfortable during a cold. Some early research has looked at elderberry’s effect on cold and flu symptoms, but results are limited and it should not be treated as a proven treatment — and honey should never be given to children under one year old. As always, these are comfort measures, not substitutes for medical care if symptoms are severe or don’t improve.

When to See a Doctor

Most colds resolve on their own within a week or two. See a doctor if you have a high or persistent fever, difficulty breathing, symptoms that worsen after initially improving, or if you’re in a higher-risk group (for example, due to age or an underlying health condition).

What We Left Out

Our source material for this article included a number of specific claims about COVID-19 treatments — including ozone therapy, black seed oil, melatonin, and glutathione-related protocols — presented as ways to reduce virus severity or mortality. These are not established medical treatments, and given the serious public-health stakes of COVID-19 misinformation, we did not include any version of these claims in this rewrite, even in a softened form. This content is flagged for mandatory medical/legal review, and we’d recommend it not be republished in any form without a licensed medical professional’s sign-off.

For more general wellness guidance, visit our Wellness Topics hub or see our related guide on nutrition and everyday wellness habits.