The normal range of homocysteine is 6-17 μmol. If a patient has hyperhomocysteinemia, it is important to find out the cause, such as whether it is caused by the patient not eating fresh fruits and vegetables, or whether the patient has H-type hypertension, that is, hypertension accompanied by hyperhomocysteinemia, and in this case, while taking antihypertensive drugs, it is important to take folic acid tablets in combination with 0.4-0.8 mg daily. In addition, patients are advised to eat more fresh fruits and vegetables, especially green leafy vegetables, which are rich in folic acid and help to further reduce homocysteine levels. For people who have had a stroke or previous cerebral hemorrhage or cerebral infarction, this may lead to elevated homocysteine levels.