A blood pressure of 160 in an 80 year old man, mostly referring to a systolic blood pressure of 160mmHg, is not normal and should alert you to the possibility of high blood pressure. Normally, the blood pressure of adults should be diastolic blood pressure of 60 to 80 mmHg, systolic blood pressure of 80 to 120 mmHg, high diastolic blood pressure of 80 to 89 mmHg, high systolic blood pressure of 120 to 139 mmHg. As long as it is within this range, it is basically normal blood pressure. And the phenomenon of the elderly appearing to have a systolic blood pressure of 160mmHg should be considered the possibility of high blood pressure. It should be noted that the body’s blood pressure will be affected by the environment, emotions, diet, medication and other aspects, and is not static. In the event that the blood pressure is outside the normal range, measurements should be taken several times in the following days. If high blood pressure is suspected, you should go to the hospital in time to have the cause clarified and then give targeted treatment.