National Nutrition Professional Supplement Reviews with Leading Health Expert Karlene Karst. Karlene gives us a 3-minute professional supplement review on Trace Minerals and why these minerals are so important to the body. To learn more about Trace Minerals and how to supplement with it, please click here:https:// www.nationalnutrition.ca/ minerals/ trace-minerals.html These minerals are needed by the body [ŝRead more #Videos