Often, having high blood pressure slips completely under the radar – until something catastrophic like a heart attack or stroke happens. Another habit worth having is making sure you’re getting enough magnesium and considering a supplement if you’re actively trying to lower your blood pressure. Given all these ways that magnesium supports blood pressure, not getting enough can be detrimental to your cardiovascular health. “Magnesium is one of my go-to supplements to address high blood pressure in patients because it can help to relax the smooth muscle in blood vessel walls. This makes it easier for blood to flow through your vessels, which can lower blood pressure,” she says.