https://www.dailymail.com/health/article-16102297/legumes-soy-blood-pressure-hypertension.html
Legumes [beans & peas] have high levels of potassium and magnesium, which are linked to lowering high blood pressure. Potassium helps the kidneys remove extra sodium, keeping the body balanced, while magnesium naturally blocks calcium and stops blood vessel muscles from tightening too much.
In addition to legumes, other foods that are rich in these minerals include bananas, avocados, spinach and plain low-fat yogurt.