Whether Grade 1 hypertension can be reversed depends on the type of hypertension, which is categorized as primary or secondary. If it is primary hypertension, it cannot be reversed, but the blood pressure can be kept in the normal range by improving lifestyle. In the case of secondary hypertension, reversal may occur by actively treating the cause of the hypertension. Grade 1 hypertension is systolic blood pressure between 140 and 159 mm Hg and/or diastolic blood pressure between 90 and 99 mm Hg. If Grade 1 hypertension is primary hypertension, it is possible for some patients to keep their blood pressure in the normal range by increasing exercise, eating a low-salt diet, losing weight, improving sleep, and quitting smoking and drinking. However, it is not possible to reverse the disease fundamentally, only to control it. If first-degree hypertension is caused by diseases, such as primary aldosteronism, pheochromocytoma, renal vascular hypertension, etc., need to actively treat the primary disease that causes, the primary disease is effectively controlled, and hypertension may be reversed. Suffering from hypertension needs to be treated under the guidance of a doctor, follow the doctor’s instructions to take medication regularly, and actively and effectively control blood pressure.