8 Surprising Foods and Supplements That Can Raise Your Blood Pressure

For better BP, eat your fruits and veggies — and watch out for these culprits
black licorice Photo: Katherine Gee/Shutterstock
burger and fries
red wine
bologna sandwich
frozen pizza
black licorice
tree trunk
soy products
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Real black licorice

Natural black licorice (Glycyrrhiza glabra) has been used for thousands of years to treat illness and naturally sweeten foods and teas. But research suggests people who consume it regularly in large amounts (more than 20 grams a day) may see a troubling rise in blood pressure. And people who already have high blood pressure may see a spike with only 5 grams per day. However, “these aren’t the typical licorice candies you find in the store,” says Salge Blake. Many of those candies are made from anise oil and don’t contain any licorice. There is also another kind of licorice, called DGL or deglycyrrhizinated licorice, that doesn’t seem have the same negative side effects.