World Hypertension Day is celebrated every year on May 17. The World Hypertension League set this special day to emphasize that hypertension is the most important risk factor for heart disease, cerebrovascular disease (brain hemorrhage, cerebral infarction) and kidney disease. In order to raise public awareness of the relationship between obesity and blood pressure, the theme of World Hypertension Day 2010 is “Healthy Weight, Healthy Blood Pressure”. There are currently 1.1 billion overweight and obese people in the world, including 300 million obese people, and more seriously, one sixth of children are currently overweight and obese. It is inescapable that for developing countries, hypertension-related deaths account for 80% of all deaths. It is well established that the interaction of obesity and excessive sodium intake is the underlying cause of the development of hypertension in many young and middle-aged people, especially those with abdominal obesity. Early in the course of the disease, elevated diastolic blood pressure is usually predominant and progresses to elevated both systolic and diastolic blood pressure as the disease progresses, particularly with sclerosis of the large arteries. Lifestyle interventions such as weight loss, salt restriction, and moderate exercise are more effective before systolic blood pressure rises. Effective exercise with appropriate dieting can effectively control blood pressure, while limiting salt intake, should reduce daily sodium intake to less than 6 grams per day as recommended by the World Health Organization (WHO), ideally to less than 3 grams per day. The Chinese Obesity Working Group recommends that a body mass index (BMI) <18.5 kg/m² is considered underweight; 18.5-23.9 kg/m² is considered normal weight; 24.1-27.9 kg/m² is considered overweight, and ≥28 kg/m² is considered obese. Men with waist circumference ≥ 90 cm and women with waist circumference ≥ 85 cm are centrally obese (i.e., abdominally obese). The algorithm for BMI is to divide your weight (kg) by the square of your height (m).