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Do You Need to Take Vitamin K2 with Vitamin D?

Video Friday: Dr. John Campbell reviews the scientific evidence to determine if supplementing with vitamin K2 with vitamin D is absolutely necessary It’s Video Friday! Today’s video addresses a frequently asked question among GrassrootsHealth...

The BIG Mistake by the IOM

Video Friday: The math and science used to determine recommended vitamin D serum levels and supplementation amounts, and where the IOM got it wrong It’s Video Friday! Today’s video titled What Serum Level Should...