A new study just found that several fruits can lower your blood pressure. Ahead, dietitians break down the best fruits that may help lower your blood pressure to regularly add to your plate. When that happens, the amount of fluid in your blood vessels increases and raises blood pressure along with it. It also helps to relax the blood vessels, making it easier for blood to flow through and lowering blood pressure as a result. It boosts the production of nitric acid in your body, helping to widen those blood vessels and lower your blood pressure, Keatley says.