Losing weight doesn’t necessarily mean that high blood pressure goes away, but it definitely goes down. That is, higher weight has higher blood pressure. Because obesity is often combined with elevated blood lipids, in addition to an increase in blood volume, the load on the heart will increase, so there will be an increase in blood pressure. The normal body mass index is 18.5-24.9, but when the body mass index is >23, overweight should be considered. In the case of overweight, blood pressure will rise by 5-20 mmHg for every 5-10 kg of weight, so weight reduction is a very definite decrease in blood pressure. If the basal blood pressure is very high, the blood pressure may decrease by 5-20mmHg after weight loss, but the blood pressure may not return to normal after weight reduction. If the basal blood pressure is mild hypertension of 140/90mmHg, the hypertension is restored after weight loss at that time. However, if the underlying blood pressure is grade 2 or 3 hypertension, reducing weight can only help to better control the blood pressure, and is unlikely to cause the hypertension to flare.