What can you do to improve your immune system? - Harvard Health
https://www.health.harvard.edu/nutrition/what-can-you-do-to-improve-your-immune-system
WEBSep 19, 2016 · What can you do to improve your immune system? September 19, 2016. Myths vs facts and strategies for healthier living. Your immune system is on the job around the clock to protect you from infectious bacteria, viruses, fungi, and parasites that cause disease, suffering, and death.
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