4. The beet goes on
Drinking a glass of beet juice can lower blood pressure within just a few hours, according to a Queen Mary University of London study published last year in the American Heart Association journal Hypertension. The nitrate in the juice has the same effect as taking a nitrate tablet, the researchers found. Beet juice can be found at some health food stores and specialty groceries such as Whole Foods. Other nitrate-rich foods include spinach, lettuce, cabbage, carrots and, of course, whole beets.