High blood pressure in young people is mostly caused by poor living habits, but can also be caused by genetic factors and kidney diseases. 1. Bad life habits (1) Obesity: obesity is a very important risk factor for hypertension. (2) Mental and psychological factors: if you stay up late for a long time, have high pressure, emotional excitement or excessive anxiety, it will also lead to the emergence of high blood pressure. (3) Smoking and drinking: long-term smoking and drinking are also important triggers of hypertension. 2. Genetic factors: if there is a family history of genetic disease, young people will also easily suffer from high blood pressure. 3. Renal diseases: some renal diseases (such as glomerulonephritis, pyelonephritis, renal tuberculosis, renal artery stenosis, etc.) can also cause renal hypertension due to renal parenchymal lesions and renal vascular lesions. Young people suffering from hypertension are recommended to have timely intervention and treatment under the guidance of a doctor, to have more physical exercise in daily life and to pay attention to a light diet.