Normal diastolic blood pressure is between 60 and 89. If the diastolic blood pressure is lower than 60mmHg, there are the following common reasons:
First, the elderly, due to poor arteriosclerosis, will have diastolic blood pressure below 60mmHg.
Sencond, hypotension caused by other diseases, such as blood loss, heart failure, and hyperthyroidism.
So, if you don't have any symptoms, you don't have to worry about it. If you feel dizzy, palpitation, etc., you need to go to the cardiology clinic immediately.