Normal blood pressure in a 48-year-old population is also below 120/80 mmHg, although many people in the 48-year-old population may experience a gradual increase in blood pressure. Generally speaking, a blood pressure between 120/80 and 140/90 mmHg is a high value of normal blood pressure. The closer the normal blood pressure is to 140/90 mmHg, the more likely it is that there is prehypertension, and over 140/90 mmHg is considered hypertension. For people 48 years of age, if available, try to control blood pressure below 120/80 mmHg, and the recommended prevention is through therapeutic lifestyle interventions. In general, do not be sedentary, control your weight, adhere to regular moderate intensity exercise for about half an hour a day, a low salt and low fat diet as well as a high intake of fruits and vegetables, quit smoking and limit the intake of alcohol.