Holly Mattix-Kramer, MD, on How Latitude Affects Vitamin D and BP Levels

Speaking about her latest study, "25-Hydroxyvitamin D and Blood Pressure: A Plateau Effect in Adults With African Ancestry Living at Different Latitudes," Holly Mattix-Kramer, MD, who is an associate professor in the Division of Nephrology and Hypertension at the Stritch School of Medicine at Loyola University, explains the effect of latitude on vitamin D levels and blood pressure.

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