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Published Jan 8, 2024

How to Prevent & Treat Colds & Flu

Andrew Huberman delves into the complex workings of the immune system, the impact of stress and exercise on immunity, and the role of supplements like vitamins and zinc in combating colds and flu, providing listeners with practical strategies to enhance their body's defenses.
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  • Vitamin Role

    explores the role of vitamins C and D in immune health, emphasizing their potential in cold and flu prevention. He notes that while vitamin D supplementation can reduce the risk of acute respiratory infections, the effect is modest and should be complemented by sunlight exposure and a balanced diet 1. Vitamin C, often touted for its immune-boosting properties, requires high doses to potentially shorten cold duration, but the evidence is not robust 2.

    Vitamin D itself is unlikely to be the sole protectant against colds and flus, but it's probably a good thing to include in your general kit of nutrition and supplementation tools.

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    Huberman advises measuring vitamin D levels to tailor supplementation needs, as excessive intake can be harmful 1.

       

    Zinc & Echinacea

    Zinc and echinacea are popular supplements for cold and flu prevention, but their effectiveness varies. explains that while echinacea's benefits are minimal, zinc has shown promise in reducing cold duration, especially when taken in doses of 100 milligrams or more 3. He warns against taking zinc on an empty stomach due to potential gastric distress and advises consulting a physician before starting any supplement regimen 4.

    There are pretty darn good data that support supplementing with zinc as a way to combat colds and flus, in particular colds.

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    Zinc supplementation is particularly beneficial for older adults, but caution is advised for children and pregnant women 4.

       

    NAC Potential

    N-acetylcysteine (NAC) emerges as a promising remedy for colds and flu, with highlighting its mucolytic properties that alleviate congestion 5. He shares personal experiences and references studies showing NAC's potential in reducing flu symptoms and preventing infections 5. Despite limited research, some clinicians use NAC as a preventative measure, especially during flu season 6.

    NAC is a powerful mucolytic. The mucus just starts flowing out of you.

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    Huberman suggests that while more data is needed, NAC could be a valuable addition to one's immune support toolkit 6.

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