mmhg, also called mmHg, is a unit of measurement that makes human blood pressure. Normal human blood pressure, for systolic pressure that is high pressure less than 140mmHg, low pressure that is diastolic pressure less than 90mmHg. if there is blood pressure measured again above this standard, is called hypertension. There are many causes of hypertension, and if hypertension occurs, you need to actively go to the hospital for examination and active treatment. In terms of treatment there is dietary control, a good low salt and low fat diet, less animal fat and fatty meat, and more green vegetables. In terms of treatment you can also use medication, such as oral antihypertensive drugs, such as nifedipine, etc., all of which can make certain adjustments to blood pressure.