In this video Dr. Oz shows you a healthy heart and a diseased heart. Note how he mentions that all a sick heart can do is 'enlarge'. Dr. Oz teaches us ways to build good health and in this case that includes supplementing your daily diet with vitamin D.
If you listen to the end, you will see him recommend 1000 IU of Vitamin D every day for your heart health, and he states how vitamin D helps your calcium be absorbed where it is supposed to be absorbed in your body.
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To learn more about a pharmaceutical grade vitamin D visit: 1000 IU Vitamin D.