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What do 56 randomized clinical trials involving nearly 100,000 people between the ages of 18 and 107 show vitamin D can do to our lifespan?
Beta glucan fiber in nutritional yeast may improve immune function, but there is a concern about lead contamination in some brands.
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.
Vitamin D3—sourced from sunlight exposure, animal, and plant sources—may be preferable to vitamin D2 sourced from fungi.
Major fish oil manufacturers and drug stores are being sued for failing to disclose the PCB pollutants in fish oil supplements.