Dr. Erin Michos with Johns Hopkins School of Medicine recommends that cardiologists talk to their patients about vitamin D and calcium supplement use and dose. Low vitamin D and high calcium may contribute to cardiovascular disease risk, but there are no compelling clinical trials yet for CV outcomes. “In the meantime I recommend taking a conservative approach of less is more,” she said at Piedmont Heart’s Napa Valley Cardiology Conference. Food sources may be a better way to get the recommended daily allowance of calcium – and the same goes for Vitamin D along with modest sunlight exposure, she said.