How low pressure is dangerous?

Low blood pressure refers to diastolic blood pressure in clinical practice. Generally speaking, low blood pressure should not exceed 90mmHg. When low blood pressure exceeds or equals 90mmHg, non-drug treatment will be taken first, including weight control, reduction of sodium salt and fat intake, exercise, smoking and alcohol withdrawal, self-regulation of mood, and maintenance of peace of mind. When non-drug treatment exceeds 3~6 months and blood pressure is still greater than or equal to 140/90mmHg, drug intervention must be carried out. Common drug treatment methods include oral antihypertensive drugs and Chinese herbal medicine for syndrome differentiation.