15. Red onion
You probably don’t want to stay with red onion breath on a romantic date, but whenever you can, adding red onions to your food can be a good idea if you want to keep blood pressure levels under control. This food has been found particularly useful in patients with pre-hypertension. In other words, if your blood pressure levels are borderline or a bit too high, this can be a very effective dietary change for you. One of the reasons is that onions contain quercetin. They also have phytonutrients that work directly in your blood vessels to protect them from endothelial dysfunction.