Taken from UNC Health Talk. Nearly half of all Americans have high blood pressure, and many of them don’t even realize it. That’s a problem, says Ben Walker, MD, a cardiologist with North Carolina Heart & Vascular. High blood pressure—called hypertension—is a type of cardiovascular disease, and it can be a warning sign of bigger problems to come. “For a lot of people, it’s the precursor for more serious conditions,” Dr. Walker says. “It’s the ubiquitous disease that makes everything worse.”…