Over the years, countless dietary supplements, alternative remedies—such as kombucha, a fermented tea—and foods such as mushrooms and oysters have been touted as immune-system boosters. In fact, more than 1,000 supplements currently on the U.S. market are claimed to have a positive effect on immunity.
But a single solution for a flagging immune system in otherwise healthy people has eluded us.
So, what can you do to help maintain health as your immune system naturally declines?
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