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How effective are flu shots, elderberries, echinacea, and cranberries?
A daily dose of 4,000 IU of vitamin D is recommended for elders at high risk for falling to improve muscle strength and balance, though there is something that works even better.
The green algae, chlorella, may help attenuate the drop in immune function antibodies associated with over-strenuous exercise.
Athletes who overtrain may put excessive stress on their bodies, and become more susceptible to respiratory infections. But, the fiber found in nutritional and brewer’s yeast may prevent this immune decline in marathon runners.
