Broccoli
Broccoli is packed with various minerals that are essential for maintaining a healthy heart, including potassium, magnesium, and calcium. Similar to kale, broccoli is also a great source of iron and vitamin K. Research has shown that consuming a serving of broccoli every day can gradually lower blood pressure, thanks to the minerals that help relax blood vessels. Serve broccoli steamed as a side dish or enjoy it raw with fat-free salad dressings as a healthy snacking option.
Watermelon
Watermelon is not only a super refreshing fruit, but it also contains a non-essential amino acid called L-citrulline, which is being tested in clinical trials as an antihypertensive. L-arginine is another important amino acid in hormonal release and immunity, and it is a precursor to nitric oxide, which helps dilate blood vessels and reduce blood pressure. Since L-citrulline is a precursor to L-arginine, it is considered a vital part of this process.