Most people who have high blood pressure do not have symptoms. In some cases, people with high blood pressure may have a pounding feeling in their head or chest, a feeling of lightheadedness or dizziness, or other signs.
Medical dictionaries is your answer
I think it’s 90%. And it increases the risk of developing hypertension.
Heart disease, Clogged blood vessels, High cholesterol, High blood pressure, Diabetes, Obesity, Metabolic syndrome, and Parkinson's disease.