Vitamin pills and icy swims: Can you really boost your immune system?

After being struck down by winter illness, the BBC's James Gallagher goes in search of ways to boost his immune system.

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Feb 8, 2025 - 22:16
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Vitamin pills and icy swims: Can you really boost your immune system?
After being struck down by winter illness, the BBC's James Gallagher goes in search of ways to boost his immune system.
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